Curriculum Vitae

Name: Jim E. Morel

Work Address:Texas A&M UniversityDepartment of Nuclear Engineering3133 TAMUCollege Station, TX 77843-3133

Work E-mail Address: morel@tamu.edu

Education:Ph.D.: Nuclear Engineering, University of New Mexico, 1979.M.S.: Nuclear Engineering, Louisiana State University, 1974.B.S.: Mathematics, Louisiana State University, 1972.

Professional Experience:

2007-Present: Director,Center for Large Scale Scientific Simulations,Texas A&M University, College Station, TX.The Center for Large Scale Scientific Simulations (CLASS) facilitatesand promotes multidisciplinary multiphysics computational researchcollaborations among Texas A&M faculty across a broad range of de-partments. CLASS also promotes multi-institutional collaborative re-search among Texas A&M University, other universities, and nationallaboratories. The CLASS research portfolio curently consists of threemajor projects, two of which are in collaboration with other universi-ties, and one of which is in collaboration with a national laboratory.CLASS currently has three employees consisting of a program managerand two research scientists.

2005-Present: Professor,Texas A&M University, College Station, TX.Tenured faculty member in the Department of Nuclear Engineering.

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Teaching undergraduate and graduate nuclear engineering courses. Di-recting student thesis and dissertation research, and performing col-laborative research with colleagues from universities and national lab-oratories. Pursuing research opportunities in the general areas of com-putational transport methods, computational radiation-hydrodynamicsmethods, and computational multiphysics methods. Developing neweducational programs relating to multiphysics/multiscale computationand multiphysics software development.

2002-2005: Science Advisor/Senior Staff memberLos Alamos National Laboratory, Los Alamos, NM.Participated in and provided direction for numerical research efforts inneutron transport, charged-particle transport, thermal radiation trans-port, and radiation-hydrodynamics.

1997-2001: Group Leader,Los Alamos National Laboratory, Los Alamos, NM.Manager/supervisor for a group of approximately 25 staff memberstasked with developing computational methods for neutral and charged-particle transport calculations together with transport software pack-ages for implementation in large multiphysics codes. Software engi-neering was a critical task that received as much attention as numeri-cal analysis. Provided technical leadership for the group, and remainedheavily involved in numerical methods research.

1994-1997: Team Leader,Los Alamos National Laboratory, Los Alamos, NM.Lead a seven-person team that developed computational methods forneutral and charged-particle transport. Most effort related to parallel3-D unstructured-mesh neutral-particle and charged-particle transportcodes.

1984-1993: Staff Member,Los Alamos National Laboratory, Los Alamos, NM.Extensive experience building thermal radiation transport modules forsophisticated radiation-hydrodynamics codes. Extensive experience de-veloping convergence acceleration schemes for the discrete-ordinatesequations with advanced spatial discretizations. Developed cell-centereddiffusion discretization schemes for 2-D and 3-D non-othogonal meshes

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and associated multigrid solution schemes. Developed multigrid solu-tion techniques for the discrete-ordinates equations with both isotropicand highly anisotropic scattering. Developed codes and algorithmsfor discrete-ordinates and spherical-harmonics transport calculationson both structured and unstructured 3-D meshes using massively par-allel computers.

1976-1984: Member of the Technical Staff,Sandia National Laboratories, Albuquerque, NM.Developed computational methods (primarily Monte Carlo and dis-crete ordinates methods) for both neutral and charged-particle trans-port. Performed neutral and charged-particle transport analysis fora wide variety of applications including Bremsstrahlung converter de-sign, fast reactor safety, radiation effects on cables and electronics,Electromagnetic pulse effects, magnetic-confinement fusion, and iner-tial confinement fusion. Extensive experience with all Sandia coupledelectron-photon Monte Carlo codes (TIGER, CYLTRAN, ACCEPT,etc.), and with the Los Alamos discrete ordinates codes, ONETRAN,and ONEDANT.

1974-1976: Nuclear Research Officer,Air Force Weapons Laboratory, Albuquerque, NM.Performed radiation transport analyses relating to satellite electronicsvulnerability to natural and nuclear space radiation. Developed com-putational methods for such analyses. Worked extensively with thecoupled electron-photon Monte Carlo transport code, TIGER, both inusing the code and in implementing new methods and options in thecode.

Awards:LANL Distinguished Performance Award, 1992.DOE Weapons Program Award of Excellence, 1994.Fellow, American Nuclear Society, 2010.Gerald C. Pomraning Memorial Award, Mathematics and ComputationDivision, American Nuclear Society, 2017.

Professional Service:Member, LANL X-Division Science Council (2004).Member, LANL ADWP Predictive Science Advisory Council(2004).

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Member, George W. Woodruff School of Mechanical Engineering Ad-visory Board (2001-2004), Georgia Institute of Technology.Member, DOE ASC Review Panel for Sandia National Laboratories(2001-2006).Member, Computational Division Review Committee, Lawrence Liver-more National Laboratory (2007-2008).Member, Editorial Board of Transport Theory and Statistical Physics.

Professional Memberships:Member of the Society for Industrial and Applied Mathematics.Member of the American Nuclear Society.

Academic Activities (prior to 2005):Named a National Laboratory Professor in 2004 in the Departmentof Chemical and Nuclear Engineering at the University of New Mexicowhile employed at Los Alamos National Laboratory. Held the academictitle of full professor. Was able to serve as the chairman of graduatestudent thesis and dissertation committees. Was able to seek fundingfor students as a UNM professor, and had faculty voting rights withinthe department. Was allowed by LANL to spend up to twenty percenttime on UNM matters.

Served as an adjunct professor at several universities. The particu-lar name given to this position varies among the institutions, but itimplies that one has officially served on the committees of graduatestudents, and in some cases, directed their research. In particular,the thesis/dissertation research of the following graduate students wasdirected:

Daniel Sloan UNM Ph.D. Nuc. Eng. 1981.Maximo Lazo UNM M.S. Nuc. Eng. 1982.

UNM Ph.D. Nuc. Eng. 1984.B. Todd Adams UNM Ph.D. Nuc. Eng. 1994.Mark Landesmann LSU M.S. Nuc. Eng. 1986.Allan Barnett RPI Ph.D. Nuc. Eng. 1988.John Josef PSU Ph.D. Physics 1998.

Also served on graduate student committees in the Department of Nu-clear Engineering at Texas A&M University and in the Applied Math-ematics Department at the University of Colorado-Denver.

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Periodically taught a graduate course over the last 20 years in the De-partment of Chemical and Nuclear Engineering at UNM on numericalmethods for radiation transport. After the move to LANL from Sandiain 1984, the course was taught at LANL and telecast to both UNMand Sandia in Albuquerque. When it was last taught, the course wastelecast over the web to UNM and Sandia in Albuquerque and Sandiain Livermore via the Access Grid technology.

Research Interests:Discretization techniques and associated multi-level solution techniquesfor neutral-particle and charged-particle diffusion and transport on un-structured meshes and structured meshes with adaptive refinement.Monte Carlo methods and hybrid deterministic/Monte Carlo methods.Discretization and solution techniques for the radiation-hydrodynamicsequations and for multiphysics/multiscale calculations in general. Pre-conditioned Krylov solution techniques with an emphasis on the devel-opment of multilevel preconditioners.

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Invited Plenary Presentations:

1. J. E. Morel, “Deterministic Transport Methods and Codes at LosAlamos,” International Conference on Mathematics and Compu-tation, Reactor Physics and Environmental Analyses in NuclearApplications, Madrid, Spain, September 27-30, 1999.

2. E. W. Larsen and J. E. Morel, “Deterministic Methods for the 1’st-Order Transport Equation,” M&C2003: Nuclear Mathematicaland Computational Sciences: A Century in Review, A CenturyAnew, Gatlinburg, Tennessee, April 6-11, 2003.

3. Jim E. Morel, “Basic Krylov Methods with Application to Trans-port,” M&C2005: International Meeting onMathematics and Com-putation, Supercomputing, Reactor Physics and Nuclear and Bi-ological Applications, Avignon, France, September 12-15, 2005.

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Publications

A. Book Chapters

1. J. E. Morel, “Discrete-Ordinates Methods for Radiative Transfer in theNon-Relativistic Stellar Regime,” in Computational Methods in Trans-port (F. Graziani, ed.), vol. 48 of Lecture Notes in ComputationalScience and Engineering, pp. 69–81, Springer, 2006.

2. Edward W. Larsen and Jim E. Morel, “Chapter 1: Advances in Dis-crete Ordinates Methodology,” in Nuclear Computational Science: ACentury in Review, (Yousry Azmy and Enrico Sartori, eds.), Springer,New York (2010).

B. Refereed Journal Articles

1. J. E. Morel and J. C. Courtney, “Subcadmium Fluxes in Water NearCalifornium Sources,” Health Physics, 35, 398-401 (1978).

2. J. E. Morel, “On the Validity of the Extended Transport Correctionfor Low Energy Electron Transport,” Nuclear Science and Engineering,71, 64-71 (1979).

3. J. A. Halbleib and J. E. Morel, “Adjoint Monte Carlo Electron Trans-port in the Continuous-Slowing-Down Approximation,” Journal of Com-putational Physics, 34, 211-230 (1980).

4. S. A. Dupree and J. E. Morel, “One-Dimensional Discrete-OrdinatesAdjoint Calculations of Cylindrical Target Responses to Plane-IncidentSources,” Nuclear Science and Engineering, 78, 284-293 (1981).

5. J. E. Morel, “Fokker-Planck Calculations Using Standard Discrete Or-dinates Codes,” Nuclear Science and Engineering, 79, 340-356 (1981).

6. J. E. Morel, “A Synthetic Acceleration Method for Discrete OrdinatesCalculations with Highly Anisotropic Scattering,” Nuclear Science andEngineering, 82, 34-46 (1982).

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7. Charles N. Vittitoe, J. E. Morel, and Thomas P. Wright, “RelativisticElectron Beam Transport in Curved Channels,” Journal of AppliedPhysics, 53, 8489-8496 (1982).

8. J. E. Morel and G. R. Montry, “Analysis and Elimination of the Dis-crete Ordinates Flux Dip,” Transport Theory and Statistical Physics,13 615-633 (1984).

9. B. R. Wienke, J. E. Morel, T. E. Cayton, and R. B. Howell, “HPLAS:Multigroup Cross Section and Reaction Rate Processor for CoupledH, H , and H Transport Applications in Plasmas,” Computer PhysicsCommunications, 34 87-99 (1984).

10. J. E. Morel, “An Improved Fokker-Planck Angular Differencing Scheme,”Nuclear Science and Engineering, 89, 131-136 (1985).

11. Arian Pregenzer and J. E. Morel, “A Simplified Monte Carlo ElectronTransport Algorithm for Advanced Bremsstrahlung Converter Design,”Journal of Applied Physics, 57, 4849-4855 (1985).

12. J. E. Morel, E. W. Larsen, and M. K. Matzen, “A Synthetic Accelera-tion Scheme for Radiative Diffusion Calculations,” Journal of Quanti-tative Spectroscopy and Radiative Transfer, 34, 243-261 (1985).

13. J. E. Morel, “Multigroup Legendre Coefficients for the Diamond Dif-ference Continuous Slowing Down Operator,” Nuclear Science and En-gineering, 91, 324-331 (1985).

14. Maximo S. Lazo and J. E. Morel, “A Linear-Discontinuous GalerkinApproximation for the Continuous-Slowing-Down Operator,” NuclearScience and Engineering, 92, 98-109 (1986).

15. Edward W. Larsen, J. E. Morel, Warren F. Miller, Jr., “Asymptotic So-lutions of Numerical Transport Problems in Optically Thick, DiffusiveRegimes,” Journal of Computational Physics, 69, 283-324 (1987).

16. J. E. Morel, “A Hybrid Collocation-Galerkin-Sn Method for Solvingthe Boltzmann Transport Equation,” Nuclear Science and Engineering,101, 72-87 (1989).

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17. L. J. Lorence, Jr., J. E. Morel, and E. W. Larsen, “An S2-Synthetic Ac-celeration Scheme for the One-Dimensional Sn Equations with Linear-Discontinuous Spatial Differencing,” Nuclear Science and Engineering,101, 341-351 (1989).

18. Allan Barnett, J. E. Morel, and D. R. Harris, “A Multigrid AccelerationMethod for the 1-D Sn Equations with Anisotropic Scattering,” NuclearScience and Engineering, 102, 1-21 (1989).

19. E. W. Larsen and J. E. Morel, “Asymptotic Solutions of NumericalTransport Problems in Optically Thick Diffusive Regimes II,” Journalof Computational Physics, 83, 212-236 (1989).

20. Mark Landesman and J. E. Morel, “Angular Fokker-Planck Decompo-sition and Representation Techniques,” Nuclear Science and Engineer-ing, 103, 1-11 (1989).

21. J. J. Honrubia and J. E. Morel, “A Synthetically-Accelerated Weighted-Diamond Scheme for Charged-Particle Transport Calculations,” Nu-clear Science and Engineering, 104, 91-111 (1990).

22. J. E. Morel and E. W. Larsen, “A Multiple Balance Approach for Dif-ferencing the Sn Equations,” Nuclear Science and Engineering, 105,1-15 (1990).

23. B. R. Wienke and J. E. Morel, “Alpha Particle Transport and Ther-monuclear Burn in Mixtures,” Nuclear Science and Engineering, 105,79-87 (1990).

24. J. E. Morel and T. A. Manteuffel, “An Angular Multigrid AccelerationTechnique for the Sn Equations With Highly Forward-Peaked Scatter-ing,” Nuclear Science and Engineering, 107, 330-342 (1991).

25. L. W. Brasure, A. K. Prinja, M. S. Lazo, and J. E. Morel, “Ion Implan-tation Profiles In The Straight-Ahead Approximation With RealisticPotentials,” Nuclear Instruments and Methods, B53, 134-143 (1991).

26. J. E. Morel, J. E. Dendy, Jr., Michael L. Hall, and Stephen W. White,“A Cell-Centered Lagrangian-Mesh Diffusion Differencing Scheme,” Jour-nal of Computational Physics, 103, 286-299 (1992).

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27. T. A. Manteuffel, S. McCormick, J. Morel, S. Oliveira, and G. Yang, “AParallel Version of a Multigrid Algorithm for Isotropic Transport Equa-tions,” SIAM Journal on Scientific Computing, 15, 474-493 (1992).

28. B. T. Adams and J. E. Morel, “A Two-Grid Acceleration Scheme for theMultigroup Sn Equations with Neutron Upscattering,” Nuclear Scienceand Engineering, 115, 253-264 (1993).

29. J. E. Morel, J. E. Dendy, Jr., and T. A. Wareing, “Diffusion-AcceleratedSolution of the 2-D Sn Equations with Bi-Linear-Discontinuous Differ-encing,” Nuclear Science and Engineering, 115, 304-319 (1993).

30. J. E. Morel and J. M. McGhee, “A Fission-Source Acceleration Tech-nique For Time-Dependent Even-Parity Sn Calculations,” Nuclear Sci-ence and Engineering, 116, 73-85 (1994).

31. T. A. Wareing, Wallace F. Walters, and J. E. Morel, “Diffusion-AcceleratedSolution of the Two-Dimensional X-Y Sn Equations with Linear-BilinearNodal Differencing,” Nuclear Science and Engineering, 118, 122-126(1994).

32. J. E. Morel and J. M. McGhee, “A Diffusion-Synthetic AccelerationTechnique for Solving the Even-Parity Sn Equations with AnisotropicScattering,” Nuclear Science and Engineering, 120, 147-164 (1995).

33. T. Manteuffel, S. McCormick, J. Morel, S. Oliveira, and G. Yang, “AFast Multigrid Algorithm for Isotropic Transport Problems I: PureScattering,” SIAM Journal on Scientific Computing, 16, 601-635 (1995).

34. Taewan Noh, Warren F. Miller, Jr., and Jim E. Morel, “The Even-Parity and Simplified Even-Parity Transport Equations in Two-Dimensionalx-y Geometry,” Nuclear Science and Engineering, 123, 38-56 (1996).

35. T. Manteuffel, S. McCormick, J. Morel, and G. Yang, “A Fast Multi-grid Algorithm for Isotropic Transport Problems II: With Absorption,”SIAM Journal on Scientific Computing, 17, 1449-1474 (1996).

36. J. E. Morel, Todd A. Wareing, and Kenneth Smith, “A Linear-DiscontinuousSpatial Differencing Scheme for Sn Radiative Transfer Calculations,”Journal of Computational Physics, 128 445-462 (1996).

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37. J. E. Morel, Leonard J. Lorence, Jr., Ronald P. Kensek, and JohnA. Halbleib, “A Hybrid Multigroup/Continuous-Energy Monte CarloMethod for Solving the Boltzmann-Fokker-Planck Equation.” NuclearScience and Engineering, 124, 369-389 (1996).

38. R. P. Datta, S. D. Altekar, A. K. Ray, and J. E. Morel, “A Computa-tional Model for Coupled Electron-Photon Transport in Two Dimen-sions,” Physical Review E, 53, 6514-6522 (1996).

39. J. E. Morel, J. M. McGhee, and E. W. Larsen, “A 3-D Time-DependentUnstructured Tetrahedral-Mesh SPn Method,” Nuclear Science andEngineering, 123, 319-327 (1996).

40. E. W. Larsen, J. E. Morel, and J. M. McGhee,“Asymptotic Derivationof the Multigroup P1 and Simplified Pn Equations with AnisotropicScattering,” Nuclear Science and Engineering, 123, 328-342 (1996).

41. T. A. Wareing, W. F.Walters, and J. E. Morel, “A Diffusion-AcceleratedSolution Method for the Non-Linear Characteristic Scheme,” NuclearScience and Engineering, 124, 72-81 (1996).

42. J. A. Josef and J. E. Morel, “Simplified Spherical Harmonic Methodfor Coupled Electron-Photon Transport Calculations,” Physical ReviewE., 57, 6161-6171 (1998).

43. J. E. Morel, Randy M. Roberts, Mikhail J. Shashkov, “A Local Support-Operators Diffusion Discretization Scheme for Quadrilateral r-z Meshes,”Journal of Computational Physics, 144, 17-51 (1998).

44. J. David Moulton, Jim E. Morel, and Uri Ascher, “Approximate SchurComplement Preconditioning of the Lowest-Order Nodal Discretiza-tion,” SIAM Journal on Scientific Computing, 19, 185-205 (1998).

45. J. E. Morel and J. M. McGhee, “A Self-Adjoint Angular Flux Equa-tion,” Nuclear Science and Engineering, 132, 312-325 (1999).

46. R. B. Lowrie, J. E. Morel, and J. A. Hittinger, “The Coupling of Ra-diation and Hydrodynamics,”The Astrophysical Journal, 521, 432-450(1999).

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47. J. E. Morel, “Diffusion-Limit Asymptotics of the Transport Equation,the P1/3 Equations, and Two Flux-Limited Diffusion Theories,” Journalof Quantative Spectroscopy and Radiative Transfer, 65, 769-778 (2000).

48. R .B. Lowrie and J. E. Morel, “Issues with High-Resolution GodunovMethods for Radiation Hydrodynamics,” Journal of Quantative Spec-troscopy and Radiative Transfer, 69, 475-489 (2001).

49. R. B. Lowrie, D. Mihalas, and J. E. Morel,“Comoving-Frame RadiationTransport for Nonrelativistic Fluid Velocities,”Journal of QuantativeSpectroscopy and Radiative Transfer, 69, 291-304 (2001).

50. T. A. Wareing, J. M. McGhee, J. E. Morel, and S. D. Pautz, “Dis-continuous Finite Element Sn Methods on 3-D Unstructured Grids,”Nuclear Science and Engineering, 138, 256-268 (2001).

51. J. E. Morel, Michael L. Hall, and Mikhail J. Shashkov,“A Local Support-Operators Diffusion Discretization Scheme for Hexahedral Meshes,”Journal of Computational Physics, 170, 338-372 (2001).

52. R. B. Lowrie and J. E. Morel, “Methods for Hyperbolic Systems withStiff Relaxation,” International Journal for Numerical Methods in Flu-ids, 40, 413-423 (2002).

53. J. L. Liscum-Powell, A. K. Prinja, J. E. Morel, and L. J. Lorence, Jr.,“Finite-Element Solution of the Self-Adjoint Angular Flux Equationfor Coupled Electron-Photon Transport,” Nuclear Science and Engi-neering, 142, 270-291 (2002).

54. J. Hyman, J. Morel, M. Shashkov, and S. Steinberg, “Mimetic Fi-nite Difference Methods for Diffusion Equations,” Computational Geo-sciences, 6, 333-352 (2002).

55. J. S. Warsa, T. A. Wareing, and J. E. Morel, “Fully-Consistent Diffusion-Synthetic Acceleration of Linear Discontinuous Sn Transport Discretiza-tions on Unstructured Tetrahedral Meshes,” Nuclear Science and En-gineering, 141, 235-251 (2002).

56. J. E. Morel, T. A. Wareing, R. B. Lowrie, and D. K. Parsons, “Analysisof Ray-Effect Mitigation Techniques,” Nuclear Science and Engineer-ing, 144, 1-22 (2003).

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57. J. S. Warsa, T. A. Wareing, J. E. Morel,“Solution of the Discon-tinuous P1 Equations in Two-Dimensional Cartesian Geometry withMulti-Level Preconditioning,”SIAM Journal on Scientific Computing,24, 2093-2124 (2003).

58. T. M. Evans, Todd J. Urbatsch, Henry Lichtenstein, J. E. Morel, “AResidual Monte Carlo Method for Radiative Diffusion,” Journal ofComputational Physics, 189, 539-556 (2003).

59. J. S. Warsa, T. A. Wareing, J. E. Morel, J. M. McGhee, and R. B.Lehoucq, “Krylov Subspace Iterations for Deterministic k-EigenvalueCalculations,” Nuclear Science and Engineering, 147, 26-42 (2004).

60. J. E. Morel and K. D. Lathrop, “Singular Solutions, Integral TransportTheory, and the Sn Method,” Nuclear Science and Engineering, 147,158-166 (2004).

61. J. S. Warsa, T. A. Wareing, and J. E. Morel, “Krylov Iterative Meth-ods and the Degraded Effectiveness of Diffusion Synthetic Accelerationfor Multidimensional Sn Calculations in Problems with Material Dis-continuities,” Nuclear Science and Engineering, 147, 218-248 (2004).

62. Konstantin Lipnikov, Jim Morel, and Mikhail Shashkov, “Mimetic Fi-nite Difference Methods for Diffusion Equations on Non-OrthogonalNon-Conformal Meshes,” Journal of Computational Physics, 199, 589-597 (2004).

63. Jim E. Morel and Jeffery Densmore, “A Two-Component EquilibriumDiffusion Limit,” Annals of Nuclear Energy, 31, 2049-2057 (2004).

64. J. S. Warsa, M. Benzi, T. A. Wareing and J. E. Morel, “Precondi-tioning a Mixed Discontinuous Finite Element Method for RadiationDiffusion,” Numerical Linear Algebra with Applications, 11, 795-811(2004).

65. Jim E. Morel and James S. Warsa, “An Sn Spatial Discretization Schemefor Tetrahedral Meshes,” Nuclear Science and Engineering, 151, 157-166 (2005).

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66. Robert C. Ward, Randal S. Baker, Jim E. Morel, “A Diffusion SyntheticAcceleration Method For Block Adaptive Mesh Refinement,” NuclearScience and Engineering, 152, 164–179 (2005).

67. Jim E. Morel, B. Todd Adams, Taewan Noh, John M. McGhee, ThomasM. Evans, and Todd J. Urbatsch, “Spatial Discretizations for Self-Adjoint Forms of the Radiative Transfer Equations,” Journal of Com-putational Physics, 214, 12-40 (2006).

68. Gordon L. Olson, David S. Miller, Edward W. Larsen, Jim E. Morel,“Chord Length Distributions in Binary Stochastic Media in Two andThree Dimensions,” Journal of Quantitative Spectroscopy and Radia-tive Transfer, 101, 269–283 (2006).

69. Jim E. Morel, James S. Warsa, and Alejandro Gonzalez-Aller, “ALumped Linear-Discontinuous Spatial Discretization Scheme for Sn Cal-culations in R−Z Geometry,” Nuclear Science and Engineering, 155,168–178 (2007).

70. Jim E. Morel, Anil Prinja, John McGhee, Todd Wareing, and Brian C.Franke, “A Discretization Scheme for the 3-D Angular Fokker-PlanckOperator,” Nuclear Science and Engineering, 156, 154–163 (2007).

71. Jim E. Morel and James S. Warsa, “Spatial Finite-Element LumpingTechniques for the Quadrilateral Mesh Sn Equations in X − Y Geom-etry, ” Nuclear Science and Engineering, 156, 325–342 (2007).

72. D. A. Knoll, R. B. Lowrie, and J. E. Morel, “Numerical Analysisof Time Integration Errors for Nonequilibrium Radiation Diffusion,”Journal of Computational Physics, 226, 1332–1347 (2007).

73. Jim E. Morel, T.-Y. Brian Yang, and James S. Warsa, “Linear Multifrequency-Grey Acceleration Recast for Preconditioned Krylov Iterations,” Jour-nal of Computational Physics, 227, 244–263 (2007).

74. Massimiliano Rosa, Yousry Azmy, and Jim E. Morel, “Properties of theSn-Equivalent Integral Transport Operator in Slab Geometry and theIterative Acceleration of Neutral Particle Transport Methods,” NuclearScience and Engineering, 162, 234-252 (2009).

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75. Jeffery D. Densmore, James S. Warsa, Robert B. Lowrie, and JimE. Morel, “Stability Analysis of Implicit Time Discretizations for theCompton-Scattering Fokker-Planck Equation,” Journal of Computa-tional Physics, 228, 5933–5960 (2009).

76. Lei Zhu and Jim E. Morel, “Discontinuous Least-Squares Spatial Dis-cretization Schemes for the 1-D Slab-Geometry Sn Equations,” NuclearScience and Engineering, 164, 205-220 (2010).

77. T.M. Evans, K.T. Clarno, and J.E. Morel, “A Transport AccelerationScheme for Multigroup Discrete Ordinates with Upscattering,” NuclearScience and Engineering, 165, 292-304 (2010).

78. Teresa S. Bailey, Jim E. Morel, and Jae Chang, “Asymptotic Diffusion-Limit Accuracy of Sn Angular Differencing Schemes,” Nuclear Scienceand Engineering, 165 149–169 (2010).

79. James S. Warsa, Jeffery Densmore, Anil K. Prinja, Jim E. Morel, “Man-ufactured Solutions in the Thick Diffusion Limit,” Nuclear Science andEngineering, 166 36–47 (2010).

80. Massimiliano Rosa, Yousry Y. Azmy, and Jim E. Morel, “On the Degra-dation of Cell-Centered Diffusive Preconditioners for Accelerating SN

Transport Calculations in the Periodic Horizontal Interface Configura-tion,” Nuclear Science and Engineering, 166 218–238 (2010).

81. Ryan G. McClarren, R. Paul Drake, J. E. Morel, and James Paul Hol-loway, “Theory of Radiative Shocks in the Mixed, Optically-Thick-ThinCase,” Physics of Plasmas, 17, 093301 (2010).

82. R. G. McClarren, R. P. Drake, J. E. Morel, and J. P. Holloway, “Theoryof Radiative Shocks in the Mixed, Optically Thick-Thin Case,” Physicsof Plasmas, 17, 093301 (2010).

83. Jarrod D. Edwards, Jim E. Morel, Dana A. Knoll, “Nonlinear Variantsof the TR/BDF2 Method for Thermal Radiative Diffusion,” Journal ofComputational Physics, 230, 1198-1214 (2011).

84. Jim E. Morel and Ryan McClarren, “Stability of Explicit Radiation-Material Coupling in Radiative Transfer Calculations,” Journal of Quan-titative Spectroscopy and Radiative Transfer, 112 1518-1524 (2011).

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85. R.P. Drake, F.W. Doss, R.G. McClarren, M.L. Adams, N. Amato, D.Bingham, C.C. Chou, C. DiStefano, K. Fidkowski, B. Fryxell, T.I.Gombosi, M.J. Grosskopf, J.P. Holloway, B. van der Holst, C.M. Hunt-ington, S. Karni, C.M. Krauland, C.C. Kuranz, E. Larsen, B. van Leer,B. Mallick, D. Marion, W. Martin, J.E. Morel, E.S. Myra, V. Nair, K.G.Powell, L. Rauchwerger, P. Roe, E. Rutter, I.V. Sokolov, Q. Stout,B.R. Torralva, G. Toth, K. Thornton, A.J. Visco, “Radiative Effectsin Radiative Shocks in Shock Tubes,” High Energy Density Physics, 7,130-140 (2011).

86. Bruno Turcksin, Jean C. Ragusa, and Jim E. Morel, “Angular MultigridPreconditioner for Krylov-Based Solution Techniques Applied to the SnEquations with Highly Forward- Peaked Scattering, Transport Theoryand Statistical Physics, 41(1-2), 1-22 (2012).

87. Peter G. Maginot, Jim E. Morel, Jean C. Ragusa, “A Non-NegativeMoment-Preserving Spatial Discretization Scheme for the LinearizedBoltzmann Transport Equation in 1-D and 2-D Cartesian Geometries,”Journal of Computational Physics, 231, 6801-6826 (2012).

88. Edward W. Larsen, Akansha Kumar, Jim E. Morel, “Properties of theImplicitly Time-Differenced Equations of Thermal Radiation Trans-port,” Journal of Computational Physics, 238, 82-96 (2013).

89. Valentin Zingan, Jean-Luc Guermond, Jim Morel, Bojan Popov “Im-plementation of the Entropy Viscosity Method with the DiscontinuousGalerkin Method,” Computing Methods in Applied Mechanics and En-gineering, 253, 479-490 (2013).

90. Jim E. Morel, Jean C. Ragusa, Marvin L. Adams, Guido Kanschat,“Asymptotic PN -Equivalent SN+1 Equations,” Transport Theory andStatistical Physics, 42:1, 3-20 (2013).

91. Yunhuang Zhang, Jean C. Ragusa, Jim E. Morel, “Iterative Perfor-mance of Various Formulations of the SPN Equations,” Journal ofComputational Physics, 252 558-572 (2013).

92. William A. Wieselquist, Dimitri Y. Anistratov, Jim E. Morel, “A Cell-Local Finite-Difference Discretization of the Low-Order Quasidiffusion

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Equations for Neutral Particle Transport on Unstructured Quadrilat-eral Meshes,” Journal of Computational Physics, 273, 343-357 (2014).

93. Don E. Bruss, Jim E. Morel, Jean C. Ragusa, “S2-SA Preconditioningfor the Sn Equations with Strictly Nonnegative Spatial Discretization,”Journal of Computational Physics, 273, 706-719 (2014).

94. Peter G. Maginot, Jean C. Ragusa, Jim E. Morel, “Discontinuous Fi-nite Element Discretizations for the SN Neutron Transport Equationin Problems with Spatially Varying Cross Sections,”Annals of NuclearEnergy, 73, 506-526 (2014).

95. Jon Hansen, Jacob Peterson, Jim Morel, Jean Ragusa, Yaqi Wang, “ALeast-Squares Transport Equation Compatible with Voids,” Journal ofComputational and Theoretical Transport, (online), 1-14 (2014).

96. Akansha Kumar, Jim E. Morel, Marvin L. Adams, “A New IndirectMeasure of Diffusion Model Error,” Journal of Quantitative Spectroscopyand Radiative Transfer, 163, 24-33 (2015).

97. Peter G. Maginot, Jean C. Ragusa, Jim E. Morel,“Lumping Techniquesfor DFEM Sn Transport in Slab Geometry,” Nuclear Science and En-gineering, 179(1), 148-163 (2015).

98. Marc O. Delcini, Jean C. Ragusa, Jim Morel, “Entropy-Based Ar-tificial Viscosity Stabilization for Non-Equilibrium Grey Radiation-Hydrodynamics,” Journal of Computational Physics, 296, 293-313 (2015).

99. Peter G. Maginot, Jean C. Ragusa, Jim E. Morel, “High-order SolutionMethods for Grey Discrete Ordinates Thermal Radiative Transfer,”Journal of Computational Physics, 327, 719-746 (2016).

100. J.R. Peterson, J.E. Morel, and J.C. Ragusa, “ Residual Monte Carlofor the One-Dimensional Neutron Transport Equation,” SIAM Journalon Scientific Computing, 38(6), B941-B961 (2016).

101. Peter G. Maginot, Jean C. Ragusa, Jim E. Morel, “Nonnegative Meth-ods for Bilinear Discontinuous Differencing of the Sn Equations onQuadrilaterals,” Nuclear Science and Engineering, 185(1), 53-69 (2017).

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102. Simon R. Bolding, Mathew A. Cleveland, Jim E. Morel, “A High-Order Low-Order Algorithm with Exponentially Convergent MonteCarlo for Thermal Radiative Transfer,” Nuclear Science and Engineer-ing, 185(1), 159-173 (2017).

103. Jim E. Morel, James S. Warsa, Brian C. Franke, Anil K. Prinja, “AComparison of Two Galerkin Quadrature Methods,” Nuclear Scienceand Engineering, 185(2), 325-334. (2017).

104. Simon Bolding, Joshua Hansel, Jarrod D. Edwards, Jim E. Morel,Robert B. Lowrie, “Second-Order Discretization in Space and Time forRadiation-Hydrodynamics,” Journal of Computational Physics, 338,511-526 (2017).

105. J.M. Ferguson, J.E. Morel, R.B. Lowrie, “Nonrelativistic Grey Sn-Transport Radiative-Shock Solutions,” High Energy Density Physics,23, 95-114 (2017).

106. J.M. Ferguson, J.E. Morel, R. Lowrie, “The Equilibrium-Diffusion Limitfor Radiation Hydrodynamics,” Journal of Quantitative Spectroscopyand Radiative Transfer, 202, 176-186 (2017).

C. Refereed Proceedings - Full papers

1. J. E. Morel and G. R. Montry, “Analysis and Elimination of the Dis-crete Ordinates Flux Dip,” Proceedings of a Topical Meeting on Ad-vances in Reactor Computations, Vol. 2, pp.796-811, Salt Lake City,March 28-31, 1983.

2. M. S. Lazo and J. E. Morel, “A Linear-Discontinuous Galerkin Approxi-mation for the Continuous-Slowing-Down Operator,” Proceedings of theInternational Meeting on Advances in Nuclear Engineering Computa-tional Methods, Vol. 2, pp.770-787, Knoxville, Tennessee, April 9-11,1985.

3. J. M. Mack, J. E. Morel, and H. G. Hughes, “Monte-Carlo Electron-Photon Transport,” Lecture Notes in Physics, 240, 272-290 (1985).

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4. Leonard J. Lorence, Jr., W. E. Nelson, and J. E. Morel, “CoupledElectron-Photon Transport Calculations by the Method of Discrete Or-dinates,” IEEE Transactions on Nuclear Science, NS-32, 4416-4420December (1985).

5. J. J. Honrubia and J. E. Morel, “Comparison of Step-Like, Weighted-Diamond and Linear-Discontinuous Schemes for Charged-Particle Trans-port Calculations,” Transactions of the International Topical Meetingon Advances in Reactor Physics, Mathematics and Computation, April27-30, 1987, Hotel Meridien Montparnasse, Paris, France, Vol. 1, pp.377-388, (1987).

6. J. E. Morel and E. W. Larsen, “A New Class of Sn Spatial DifferencingSchemes,” American Nuclear Society Proceedings of a Topical Meetingon Advances in Nuclear Computation and Radiation Shielding, SanteFe, NM, April 9-13, 1:1-1:13 (1989).

7. B. R. Wienke and J. E. Morel, “Alpha Particle Transport and Ther-monuclear Burn in Mixtures,” American Nuclear Society Proceedings ofa Topical Meeting on Advances in Nuclear Computation and RadiationShielding, Sante Fe, NM, April 9-13, 49:1-49:9 (1989).

8. J. E. Morel, L. A. Olvey, J. M. McGhee, G. W. Claborn, and J. A. Josef,“Diffusion-Accelerated Solution of the Even-Parity Sn Equations WithAnisotropic Scattering,” Proceedings of the International Topical Meet-ing on Advances in Mathematics, Computation, and Reactor Physics,April 28 - May 2, 1991, Greentree Marriot, Pittsburgh, PA, pp. 11.23-1 to 11.2 3-10.

9. J. E. Morel, J. M. McGhee, L. A. Olvey, and G. W. Claborn, “Solu-tion of the 3-D Even-Parity Sn Equations on the Connection Machine,”Proceedings of the International Topical Meeting on Advances in Math-ematics, Computation, and Reactor Physics, April 28 - May 2, 1991,Greentree Marriot, Pittsburgh, PA, pp. 1.1 2-1 to 1.1 2-11.

10. W. F. Walters and J. E. Morel, “Investigation of Linear-DiscontinuousAngular Differencing for the 1-D Spherical Geometry Sn Equations,”Proceedings of the International Topical Meeting on Advances in Math-ematics, Computation, and Reactor Physics, April 28 - May 2, 1991,Greentree Marriot, Pittsburgh, PA, pp. 13.2 3-1 to 13.2 3-8.

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11. W. L. Filippone, J. E. Morel, and W. F. Walters,“An Extended First-Collision Source Method For Electron Beam Source Problems,” Pro-ceedings of the International Topical Meeting on Advances in Mathe-matics, Computation, and Reactor Physics, April 28 - May 2, 1991,Greentree Marriot, Pittsburgh, PA, pp. 7.2 2-1 to 7.2 2-12.

12. W. L. Filipone, R. C. Little, J. E. Morel, R. E. MacFarlane, and P. G.Young, “Coupled Proton/Neutron Transport Calculations Using TheSN and Monte Carlo Methods,” Proceedings of the International Top-ical Meeting on Advances in Mathematics, Computation, and ReactorPhysics, April 28 - May 2, 1991, Greentree Marriot, Pittsburgh, PA,pp. 2.1 1-1 to 2.1 1-8.

13. Edward W. Larsen, J. E. Morel, and John M. McGhee, “AsymptoticDerivation of the Simplified Pn Equations,” Proceedings of the JointInternational Conference on Mathematical Methods and Supercomput-ing in Nuclear Applications, Karlsruhe, Germany, April 19-23, 1993,Vol. 1, pp. 718-729.

14. B. T. Adams and J. E. Morel, “An Upscatter Acceleration Scheme forthe Multigroup Sn Equations,” Proceedings of the Joint InternationalConference on Mathematical Methods and Supercomputing in NuclearApplications, Karlsruhe, Germany, April 19-23, 1993, Vol. 2, pp. 445-456.

15. J. E. Morel, J. E. Dendy, Jr., and T. A. Wareing, “Diffusion-AcceleratedSolution of the 2-D Sn Equations with Bi-Linear-Discontinuous Differ-encing,” Proceedings of the Joint International Conference on Math-ematical Methods and Supercomputing in Nuclear Applications, Karl-sruhe, Germany, April 19-23, 1993, Vol. 2, pp. 488-499.

16. J. Buksa, J. Elson, D. Kothe, J. McGhee, J. Morel, R. Perry, andW. Rider, “Fully Coupled Neutronic and Hydrodynamic Analysis ofSpace Nuclear Reactor Reentry Accidents,” Proceedings of the Societyfor Computer Simulation 1993 Simulation MultiConference, March 29-April 1, 1993, Key Bridge Marriott, Arlington, Virginia.

17. Leonard J. Lorence, Ronald P. Kensek, John A. Halbleib, and J. E.Morel, “Adjoint Electron-Photon Transport Monte Carlo Calculationswith ITS,” IEEE Transactions on Nuclear Science, 42, 1895-1901 (1995).

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18. Jim E. Morel, John M. McGhee, and Randy M. Roberts, “DANTE:A 3-D Unstructured-Mesh Finite Element Transport Code,” Proceed-ings of the OECD Meeting on 3-D Deterministic Radiation TransportComputer Programs: Features, Applications, and Perspectives, Decem-ber 2-3, 1996, OECD Chateau de la Muette, Paris, France, pp. 91-100(1996).

19. J. E. Morel, J. M. McGhee, and W. F. Walters, “3-D Research Trans-port Codes at Los Alamos,” Proceedings of the International Confer-ence on Mathematics and Computations, Reactor Physics, and Envi-ronmental Analyses, April 30 - May 4, 1995, Jantzen Beach Red LionHotel, Portland Oregon, Vol. 1, pp. 527-533 (1995).

20. J. E. Morel, J. M. McGhee, and E. W. Larsen, “A 3-D Time-DependentUnstructured Tetrahedral-Mesh SPn Method,” Proceedings of the In-ternational Conference on Mathematics and Computations, ReactorPhysics, and Environmental Analyses, April 30 - May 4, 1995, JantzenBeach Red Lion Hotel, Portland Oregon, Vol. 2, pp. 887-895 (1995).

21. E. W. Larsen, J. E. Morel, and J. M. McGhee,“Asymptotic Derivationof the Multigroup P1 and Simplified Pn Equations with AnisotropicScattering,” Proceedings of the International Conference on Mathemat-ics and Computations, Reactor Physics, and Environmental Analyses,April 30 - May 4, 1995, Jantzen Beach Red Lion Hotel, Portland Ore-gon, Vol. 1, pp. 309-318 (1995).

22. T. A. Wareing, W. F.Walters, and J. E. Morel, “A Diffusion-AcceleratedSolution Method for the Non-Linear Characteristic Scheme,” Proceed-ings of the International Conference on Mathematics and Computa-tions, Reactor Physics, and Environmental Analyses, April 30 - May4, 1995, Jantzen Beach Red Lion Hotel, Portland Oregon, Vol. 2, pp.1335-1341 (1995).

23. R. P. Kensek, L. J. Lorence, Jr., J. A. Halbleib, and J. E. Morel,“Space Applications of the MITS Electron-Photon Monte-Carlo Trans-port Code System,” IEEE Transactions on Nuclear Science, 43, 2724-2730 (1996).

24. B. T. Adams and J. E. Morel, “An Acceleration Scheme for the Multi-group Sn Equations with Fission and Thermal Upscatter,” Proceedings

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of the Joint International Conference on Mathematical Methods andSupercomputing for Nuclear Applications, October 5-9, 1997, SaratogaSprings, NY, Vol. 1, pp. 343-352 (1997).

25. J. M. McGhee, R. M. Roberts, and J. E. Morel, “The DANTE Boltz-mann Transport Solver: An Unstructured-Mesh, 3-D, Spherical-HarmonicsAlgorithm Compatible with Parallel Computer Architectures,” Pro-ceedings of the Joint International Conference on Mathematical Meth-ods and Supercomputing for Nuclear Applications, October 5-9, 1997,Saratoga Springs, NY, Vol. 1, pp. 563-572 (1997).

26. Kenneth A. Van Riper, Todd J. Urbatsch, Patrick D. Soran, D. KentParsons, Jim E. Morel, Gregg W. McKinney, Stephen R. Lee, Laura A.Crotzer, Forrest W. Brinkley, Thomas E. Booth, Jacob W. Anderson,and Raymond E. Alcouffe, “AVATAR-Automatic Variance Reductionin Monte Carlo Calculations,” Proceedings of the Joint InternationalConference on Mathematical Methods and Supercomputing for NuclearApplications, October 5-9, Saratoga Springs, NY, 1997, Vol. 1, pp.661-670 (1997).

27. T. A. Wareing, J. E. Morel, and D. K. Parsons, “A First CollisionSource Method for ATTILA, An Unstructured Tetrahedral Mesh Dis-crete Ordinates Code,” Proceedings of the 1998 ANS Radiation Pro-tection and Shielding Division Topical Conference: Technologies forthe New Century, April 19-23, 1998, Sheraton Music City, Nashville,Tennessee, Vol. 1, pp. I-336 to I-382 (1998).

28. J. E. Morel, “Deterministic Transport Methods and Codes at Los Alamos,”Proceedings of the International Conference on Mathematics and Com-putation, Reactor Physics and Environmental Analyses in Nuclear Ap-plications, Madrid, Spain, September 27-30, 1999, Vol. 1, pp.25-34(1999).

29. T. A. Wareing, J. M. McGhee, J. E. Morel, and S. D. Pautz, “Dis-continuous Finite Element Sn Methods on 3-D Unstructured Grids,”Proceedings of the International Conference on Mathematics and Com-putation, Reactor Physics and Environmental Analyses in Nuclear Ap-plications, Madrid, Spain, September 27-30, 1999, Vol. 2, pp. 1185-1195(1999).

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30. Anil K. Prinja, Frederick Gleicher, and J. E. Morel, “A MultigroupDownscatter-Only Model for Charged-Particle Energy Straggling,” Pro-ceedings of the Internatioal Conference on Mathematics and Computa-tion, Reactor Physics and Environmental Analyses in Nuclear Appli-cations, Madrid, Spain, September 27-30, 1999, Vol. 1, pp. 435-445(1999).

31. T. J. Urbatsch, J. E. Morel, and J. C. Gulick, “Monte Carlo Solution ofa Spatially-Discrete Transport Equation, Part I: Transport,” Proceed-ings of the Internatioal Conference on Mathematics and Computation,Reactor Physics and Environmental Analyses in Nuclear Applications,Madrid, Spain, September 27-30, 1999, Vol. 1, pp.251-261 (1999).

32. T. J. Urbatsch, J. E. Morel, and J. C. Gulick, “Monte Carlo Solution ofa Spatially-Discrete Transport Equation, Part II: Diffusion and Trans-port/Diffusion,” Proceedings of the International Conference on Mathe-matics and Computation, Reactor Physics and Environmental Analysesin Nuclear Applications, Madrid, Spain, September 27-30, 1999, Vol. 1,pp. 262-272 (1999).

33. T. A. Wareing, J. E. Morel, and J. M. McGhee, “A Diffusion SyntheticAcceleration Method for the Sn Equations with Discontinuous FiniteElement Space and Time Differencing,” Proceedings of the Interna-tional Conference on Mathematics and Computation, Reactor Physicsand Environmental Analyses in Nuclear Applications, Madrid, Spain,September 27-30, 1999, Vol. 1, pp. 45-54 (1999).

34. J. A. Dahl, B. D. Ganapol, and J. E. Morel, “Positive Scattering CrossSections Using Constrained Least Squares,” Proceedings of the Interna-tional Conference on Mathematics and Computation, Reactor Physicsand Environmental Analyses in Nuclear Applications, Madrid, Spain,September 27-30, 1999, Vol. 1, pp. 627-636 (1999).

35. S. D. Pautz, J. E. Morel, and M. L. Adams, “An Angular MultigridAcceleration Method for Sn Equations with Highly Forward-PeakedScattering,” Proceedings of the International Conference on Mathemat-ics and Computation, Reactor Physics and Environmental Analyses inNuclear Applications, Madrid, Spain, September 27-30, 1999, Vol. 1,pp. 647-656 (1999).

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36. Y. Y. Azmy, T. A. Wareing, and J. E. Morel, “Effect of Material Het-rogeneity on the Performance of DSA for Even-Parity Sn Methods,”Proceedings of the International Conference on Mathematics and Com-putation, Reactor Physics and Environmental Analyses in Nuclear Ap-plications, Madrid, Spain, September 27-30, 1999, Vol. 1, pp. 55-63(1999).

37. Jim E. Morel, “3-D Deterministic Transport Methods Research at LANLUnder ASCI,” Proceedings of the PHYSOR 2000 ANS InternationalTopical Meeting on Advances in Reactor Physics and Mathematics andComputational Into the Next Millennium, Pittsburgh, Pennsylvania,May 7-12, 2000, pp. 1804-1813 (2000).

38. James S. Warsa, Todd A. Waring, Jim E. Morel, “On the DegradedEffectiveness of Diffusion Synthetic Acceleration for MultidimensionalSn Calculations in the Presence of Material Discontinuities,” NuclearMathematical and Computational Sciences: A Century in Review, ACentury Anew, Gatlinburg, Tennessee, April 6-11, 2003, on CD-ROMAmerican Nuclear Society, LaGrange Park, IL (2003).

39. T. M. Evans, Todd J. Urbatsch, Henry Lichtenstein, J. E. Morel, “AResidual Monte Carlo Method for Radiative Diffusion,” Nuclear Mathe-matical and Computational Sciences: A Century in Review, A CenturyAnew, Gatlinburg, Tennessee, April 6-11, 2003, on CD-ROM AmericanNuclear Society, LaGrange Park, IL (2003).

40. James S. Warsa, Todd A. Waring, Jim E. Morel, “Krylov IterativeMethods Applied to Multidimensional Sn Calculations in the Presenceof Material Discontinuities,” Nuclear Mathematical and ComputationalSciences: A Century in Review, A Century Anew, Gatlinburg, Ten-nessee, April 6-11, 2003, on CD-ROM American Nuclear Society, La-Grange Park, IL (2003).

41. James S. Warsa, Todd A. Waring, Jim E. Morel, John M. McGhee,and Richard B. Lahoucq, “Krylov Subspace Iterations for the Calcula-tion of k-Eigenvalues with Sn Transport Codes,” Nuclear Mathematicaland Computational Sciences: A Century in Review, A Century Anew,Gatlinburg, Tennessee, April 6-11, 2003, on CD-ROM American Nu-clear Society, LaGrange Park, IL (2003).

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42. J. S. Warsa, M. Benzi, T. Wareing and J. Morel, “Two-Level Precondi-tioning of a Discontinuous Galerkin Method for Radiation Diffusion,”in Numerical Mathematics and Advanced Applications, Proceedings ofENUMATH 2001, F. Brezzi, A. Buffa, S. Corsaro and A. Murli, eds.,Springer-Verlag, New York and Berlin, pp. 967-978 (2003).

43. Jim E. Morel, “Basic Krylov Methods with Application to Transport,”Proceedings of the International Topical Meeting on Mathematics andComputation, Supercomputing, Reactor Physics, and Nuclear and Bio-logical Applications, Avignon, France, September 12-15, 2005, on CD-ROM (2005).

44. Jim E. Morel, Alejandro Gonzalez-Aller, and James S. Warsa, “ALumped Discontinuous Finite-Element Spatial Discretization for Triangular-Mesh SN Calculations in R−Z Geometry,” Proceedings of the Interna-tional Topical Meeting on Mathematics and Computation, Supercom-puting, Reactor Physics, and Nuclear and Biological Applications, Avi-gnon, France, September 12-15, 2005, on CD-ROM (2005).

45. Jim E. Morel and James S. Warsa, “Sn Finite Element Lumping OnQuadrilateral Meshes in X-Y Geometry,” Proceedings of the Interna-tional Topical Meeting on Mathematics and Computation, Supercom-puting, Reactor Physics, and Nuclear and Biological Applications, Avi-gnon, France, September 12-15, 2005, on CD-ROM (2005).

46. Massimiliano Rosa, Yousry Y. Azmy, and Jim E. Morel, “Properties ofthe Sn-Equivalent Integral Transport Operator in Slab Geometry andthe Iterative Acceleration of Neutron Transport Methods,” Proceedingsof the International Topical Meeting on Mathematics and Computation,Supercomputing, Reactor Physics, and Nuclear and Biological Applica-tions, Avignon, France, September 12-15, 2005, on CD-ROM (2005).

47. Robert C. Ward, Randal S. Baker, and Jim E. Morel, “A Diffusion-Synthetic Acceleration Method for Block Adaptive Mesh Refinement,”Proceedings of the International Topical Meeting on Mathematics andComputation, Supercomputing, Reactor Physics, and Nuclear and Bio-logical Applications, Avignon, France, September 12-15, 2005, on CD-ROM (2005).

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48. Frederick N. Gleicher, James S. Warsa, Jim E. Morel, and Anil K.Prinja, “Subcell Sn Sweeping for Meshes with Reentrant Cells,” JointInternational Topical meeting on Mathematics and Computation andSupercomputing in Nuclear Applications, Monterey California, April15-19, 2007, on CD ROM, American Nuclear Society, La Grange Park,IL (2007).

49. James S. Warsa and Jim E. Morel, “Solution Algorithms for a Pn−1-Equivalent Sn Angular Discretization of the Transport Equation inOne-Dimensional Spherical Coordinates,” Joint International Topicalmeeting on Mathematics and Computation and Supercomputing in Nu-clear Applications, Monterey California, April 15-19, 2007, on CD ROM,American Nuclear Society, La Grange Park, IL (2007).

50. Jeffery D. Densmore, James S. Warsa, and Jim E. Morel, “ A Fokker-Planck Method for Modelling Compton Scattering in Implicit MonteCarlo Simulations,” Joint International Topical meeting on Mathe-matics and Computation and Supercomputing in Nuclear Applications,Monterey California, April 15-19, 2007, on CD ROM, American Nu-clear Society, La Grange Park, IL (2007).

51. Peter Maginot, Jim Morel, Jean Ragusa, “A Positive Non-linear Clo-sure for the Sn Equations with Linear-Discontinuous Spatial Differenc-ing,” International Conference on Mathematics, Computational Meth-ods & Reactor Physics (M&C 2009), Saratoga Springs, New York, May3-7, 2009, on CD-ROM, American Nuclear Society, LaGrange Park, IL(2009).

52. Travis Trahan, Jean Ragusa, and Jim Morel, “Galerkin Quadraturesfor the Sn Method in 2D Cartesian Geometries and Application toForward-Peaked Scattering Particle Transport Problems,” InternationalConference on Mathematics, Computational Methods & Reactor Physics(M&C 2009), Saratoga Springs, New York, May 3-7, 2009, on CD-ROM, American Nuclear Society, LaGrange Park, IL (2009).

53. Michael S. Reed and Jim E. Morel, “A Linear-Discontinuous Cut-cell Discretization for the Sn Equations in R-Z Geometry,” Interna-tional Conference on Mathematics, Computational Methods & ReactorPhysics (M&C 2009), Saratoga Springs, New York, May 3-7, 2009, onCD-ROM, American Nuclear Society, LaGrange Park, IL (2009).

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54. Jim E. Morel, Jared P. Tooley, Brandon J. Blamer, “Exponentially-Convergent Monte Carlo Via Finite-Element Trial Spaces,” Interna-tional Conference on Mathematics and Computational Methods Appliedto Nuclear Science and Engineering (M&C 2011), Rio de Janeiro, RJ,Brazil, May 8-12, 2011, on CD-ROM, Latin American Section (LAS) /American Nuclear Society (ANS), ISBN 978-85-63688-00-2 (2011).

55. Bruno Turcksin, Jean Ragusa, and Jim Morel, “Techniques to Re-duce Memory Requirements for Coupled Electron-Photon Transport,”International Conference on Mathematics and Computational Meth-ods Applied to Nuclear Science and Engineering (M&C 2011), Rio deJaneiro, RJ, Brazil, May 8-12, 2011, on CD-ROM, Latin American Sec-tion (LAS) / American Nuclear Society (ANS) ISBN 978-85-63688-00-2(2011).

56. N. A. Gentile, Jim E. Morel, “Material Motion Corrections For Im-plicit Monte Carlo Radiation Transport,” International Conference onMathematics and Computational Methods Applied to Nuclear Scienceand Engineering (M&C 2011), Rio de Janeiro, RJ, Brazil, May 8-12,2011, on CD-ROM, Latin American Section (LAS) / American NuclearSociety (ANS) ISBN 978-85-63688-00-2 (2011).

57. Jon B. Hansen and Jim E. Morel, “A New Least-Squares TransportEquation Compatible with Voids,” International Conference on Math-ematics and Computational Methods Applied to Nuclear Science & En-gineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, onCD-ROM, American Nuclear Society, LaGrange Park, IL (2013).

58. Jacob R. Peterson, Jim E. Morel, Jean C. Ragusa, “Exponentially-Convergent Monte Carlo for the 1-D Transport Equation,” Interna-tional Conference on Mathematics and Computational Methods Appliedto Nuclear Science & Engineering (M&C 2013), Sun Valley, Idaho,USA, May 5-9, 2013, on CD-ROM, American Nuclear Society, La-Grange Park, IL (2013).

59. Akansha Kumar, Jim E. Morel, Marvin L. Adams, “A New IndirectMeasure of Diffusion Model Error,” International Conference on Math-ematics and Computational Methods Applied to Nuclear Science & En-gineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, onCD-ROM, American Nuclear Society, LaGrange Park, IL (2013).

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60. Jim E. Morel, James S.Warsa, Brian C. Franke, Anil K. Prinja, “Com-parison of Two Galerkin Quadrature Methods,” International Confer-ence on Mathematics and Computational Methods Applied to NuclearScience & Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM, American Nuclear Society, LaGrange Park, IL(2013).

61. Sergiy Manolov, Jim E. Morel, Cristian Rabiti, “Hybrid Sn-Diffusionand Sn-P3 Transport Calculations,” International Conference on Math-ematics and Computational Methods Applied to Nuclear Science & En-gineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, onCD-ROM, American Nuclear Society, LaGrange Park, IL (2013).

62. Peter G. Maginot, Jean C. Ragusa, Jim E. Morel, “Characterization ofHigh Order Spatial Discretizations and Lumping Techniques for Dis-continuous Finite Element Sn Transport,” International Conference onMathematics and Computational Methods Applied to Nuclear Science& Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013,on CD-ROM, American Nuclear Society, LaGrange Park, IL (2013).

63. Jarrod D. Edwards, Jim E. Morel, Robert B. Lowrie, “Second-OrderDiscretization in Space and Time for Radiation Hydrodynamics,” In-ternational Conference on Mathematics and Computational MethodsApplied to Nuclear Science & Engineering (M&C 2013), Sun Valley,Idaho, USA, May 5-9, 2013, on CD-ROM, American Nuclear Society,LaGrange Park, IL (2013).

64. Donald E. Bruss, Jim E. Morel, Jean C. Ragusa, “S2SA Preconditioningfor the Sn Equations with Strictly Nonnegative Spatial Discretization,”International Conference on Mathematics and Computational MethodsApplied to Nuclear Science & Engineering (M&C 2013), Sun Valley,Idaho, USA, May 5-9, 2013, on CD-ROM, American Nuclear Society,LaGrange Park, IL (2013).

65. Andrew T. Till, Marvin L. Adams, Jim E. Morel, “Application ofNonlinear Krylov Acceleration to Radiative Transfer Problems,” In-ternational Conference on Mathematics and Computational MethodsApplied to Nuclear Science & Engineering (M&C 2013), Sun Valley,Idaho, USA, May 5-9, 2013, on CD-ROM, American Nuclear Society,LaGrange Park, IL (2013).

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66. Randal S. Baker, Jon A. Dahl, Erin D. Fichtl, Jim E. Morel, “Neu-tron Transport in Eulerian Coordinates with Bulk Material Motion,”International Conference on Mathematics and Computational MethodsApplied to Nuclear Science & Engineering (M&C 2013), Sun Valley,Idaho, USA, May 5-9, 2013, on CD-ROM, American Nuclear Society,LaGrange Park, IL (2013).

67. A. T. Till, M. L. Adams, and J. E. Morel, “A Generalized MultigroupMethod Based on Finite Elements,” Proceedings of the InternationalConference on the Physics of Nuclear Reactors (PHYSOR), Kyoto,Japan, September 28-October 3, 2014, Japan Atomic Energy Agency,JAEA-Conf 2014-003.

68. Peter G. Maginot, Jim E. Morel, Jean C. Ragusa, “A Non-NegativeNon-linear Petrov-Galerkin Method for Bilinear Discontinuous Differ-encing of the Sn Equations,” Joint International Conference on Mathe-matics and Computation (M&C), Supercomputing in Nuclear Applica-tions (SNA) and the Monte Carlo Method (MC), Nashville, TN, USA,April 19-23, 2015, on CD ROM, American Nuclear Society, LaGrangePark, IL (2015).

69. Jacob R. Peterson, Hans R. Hammer, Jim E. Morel, Jean C. Ragusa,Yaqi Wang, “Conservative Nonlinear Diffusion Acceleration Applied tothe Unweighted Least-Squares Transport Equation in MOOSE,” JointInternational Conference on Mathematics and Computation (M&C),Supercomputing in Nuclear Applications (SNA) and the Monte CarloMethod (MC), Nashville, TN, USA, April 19-23, 2015, on CD ROM,American Nuclear Society, LaGrange Park, IL (2015).

70. Erin D. Fichtl, Randal S. Baker, and Jon A. Dahl, Jim E. Morel,“A Surface Integral Based Momentum Advection Scheme for Neu-tron Transport in Moving Materials,” Joint International Conferenceon Mathematics and Computation (M&C), Supercomputing in NuclearApplications (SNA) and the Monte Carlo Method (MC), Nashville, TN,USA, April 19-23, 2015, on CD ROM, American Nuclear Society, La-Grange Park, IL (2015).

71. Simon R. Bolding, Jim E. Morel, Mathew A. Cleveland, “A High-OrderLow-Order Algorithm with Exponentially-Convergent Monte Carlo for

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Thermal Radiative Transfer,” Joint International Conference on Math-ematics and Computation (M&C), Supercomputing in Nuclear Applica-tions (SNA) and the Monte Carlo Method (MC), Nashville, TN, USA,April 19-23, 2015, on CD ROM, American Nuclear Society, LaGrangePark, IL (2015).

72. Andrew T. Till, Marvin L. Adams, and Jim E. Morel, “The Finite Ele-ment with Discontiguous Support Multigroup Method: Theory,” JointInternational Conference on Mathematics and Computation (M&C),Supercomputing in Nuclear Applications (SNA) and the Monte CarloMethod (MC), Nashville, TN, USA, April 19-23, 2015, on CD ROM,American Nuclear Society, LaGrange Park, IL (2015).

73. Andrew T. Till, Marvin L. Adams, and Jim E. Morel, “The FiniteElement with Discontiguous Support Multigroup Method: Applica-tion,” Joint International Conference on Mathematics and Computa-tion (M&C), Supercomputing in Nuclear Applications (SNA) and theMonte Carlo Method (MC), Nashville, TN, USA, April 19-23, 2015, onCD ROM, American Nuclear Society, LaGrange Park, IL (2015).

74. Don E. Bruss, Ryan G. McClarren, Marvin L. Adams, and Jim E.Morel, “Construction of a Response Surface for a Reactor-Like Prob-lem with Realistic Cross Section Uncertainties,” Joint InternationalConference on Mathematics and Computation (M&C), Supercomput-ing in Nuclear Applications (SNA) and the Monte Carlo Method (MC),Nashville, TN, USA, April 19-23, 2015, on CD ROM, American NuclearSociety, LaGrange Park, IL (2015).

75. Simon R. Bolding, Jim E. Morel, “Residual Monte Carlo Transport inTime with Consistent Low-Order Acceleration for lD Thermal Radia-tive Transfer,” M&C 2017 - International Conference on Mathematics& Computational Methods Applied to Nuclear Science & Engineering,Jeju, Korea, April 16-20, 2017, on USB (2017). Available:https://www.kns.org/paper/inter paper/lists/n conf name/MC2017/.

76. Don E. Bruss, Jim E. Morel, Jean C. Ragusa, “Adjoint-Based Uncer-tainty Quantification for Radiation Transport Calculations with Un-certain Cross-Section Data,” M&C 2017 - International Conference onMathematics & Computational Methods Applied to Nuclear Science &

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Engineering, Jeju, Korea, April 16-20, 2017, on USB (2017). Available:https://www.kns.org/paper/inter paper/lists/n conf name/MC2017/.

77. Hans R. Hammer, Jim E. Morel, Yaqi Wang, “Nonlinear Diffusion Ac-celeration in Voids for the Weighted Least-Square Transport Equation,”M&C 2017 - International Conference on Mathematics & Computa-tional Methods Applied to Nuclear Science & Engineering, Jeju, Korea,April 16-20, 2017, on USB (2017). Available:https://www.kns.org/paper/inter paper/lists/n conf name/MC2017/.

78. Edward W. Larsen, Jim E. Morel, Jijie Lou, “Nonlocal Diffusion Co-efficients for Neutronic Systems Containing Voided Subregions,” M&C2017 - International Conference onMathematics & Computational Meth-ods Applied to Nuclear Science & Engineering, Jeju, Korea, April 16-20,2017, on USB (2017). Available:https://www.kns.org/paper/inter paper/lists/n conf name/MC2017/.

79. Jijie Lou, Jim E. Morel, “Linear Diffusion-Synthetic Acceleration withVoids,” M&C 2017 - International Conference on Mathematics & Com-putational Methods Applied to Nuclear Science & Engineering, Jeju,Korea, April 16-20, 2017, on USB (2017). Available:https://www.kns.org/paper/inter paper/lists/n conf name/MC2017/.

80. Jesse P. Jones, Dmitriy Y. Anistratov, Jim E. Morel, “Discretization ofLow-Order Quasidilfusion Equations on Arbitrary Quadrilaterals in 2Dr -z Geometry,” M&C 2017 - International Conference on Mathematics& Computational Methods Applied to Nuclear Science & Engineering,Jeju, Korea, April 16-20, 2017, on USB (2017). Available:https://www.kns.org/paper/inter paper/lists/n conf name/MC2017/.

D. Refereed Proceedings - Summaries

1. J. A. Halbleib and J. E. Morel, “A Generalized Quadrature Techniquefor Solving the Transport Equation,” Transactions of the AmericanNuclear Society, 27, 354-355 (1977).

2. D. A. McArthur, J. A. Halbleib, and J. E. Morel, “Coded ApertureImaging in Many-Pin Fuel Bundles,” Transactions of the AmericanNuclear Society, 28, 500-501 (1978).

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3. J. E. Morel, R. C. Allen, and R. A. Knief, “Particle Transport in anAnisotropic Medium,” Transactions of the American Nuclear Society,30, 249-250 (1978).

4. J. E. Morel, “Discrete Ordinates Electron Transport Calculations UsingStandard Neutron Transport Codes,” Transactions of the AmericanNuclear Society, 33, 676-676 (1979).

5. J. E. Morel, “Galerkin Quadrature Formulation for One-DimensionalDiscrete Ordinates Calculations,” Transactions of the American Nu-clear Society, 39, 459-460 (1981).

6. J. E. Morel and B. R. Wienke, “Advances in Discrete Ordinates Elec-tron Transport,” Transactions of the American Nuclear Society, 41,475-476 (1982).

7. E. W. Larsen, J. E. Morel, and W. F. Miller, “A New Slab GeometryRadiation Transport Differencing Scheme,” Transactions of the Amer-ican Nuclear Society, 49, 218-219 (1985).

8. L. J. Lorence, Jr., E. W. Larsen, and J. E. Morel, “An S2 SyntheticAcceleration Scheme for the One Dimensional Sn Equations,” Trans-actions of the American Nuclear Society, 52, 417-418 (1986).

9. J. E. Morel, and L. J. Lorence, Jr., “Recent Developments in DiscreteOrdinates Electron Transport,” Transactions of the American NuclearSociety, 52, 384-385 (1986).

10. E.W. Larsen, J.M. McGhee and J.E. Morel, “The Simplified PN Equa-tions as an Asymptotic Limit of the Transport Equation,” Transactionsof the American Nuclear Society 66, 231-232 (1992).

11. T.A. Wareing, W.F. Walters and J.E. Morel, “An S2-Like AccelerationMethod for the Nonlinear Characteristic Scheme”, Transactions of theAmerican Nuclear Society, Washington D.C., 71, 267-268 (1994).

12. Todd A. Wareing, Jim E. Morel, and John M. McGhee, “CoupledElectron-Photon Transport Methods on 3-D Unstructured Grids,” Trans-actions of the American Nuclear Society, 83, 240-242 (2000).

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13. J. Liscum-Powell, A. K. Prinja, J. E. Morel, L. J. Lorence, Jr., “NestedAcceleration Algorithm for Self-Adjoint Angular Flux Boltzmann-CSDEquation,” Transactions of the American Nuclear Society, 83, 253-254(2000).

14. J. E. Morel, A. K. Prinja, J. M. McGhee, T. A. Wareing, and B. C.Franke, “A Discretization Scheme for the 3-D Continuous-ScatteringOperator,” Transactions of the American Nuclear Society, 89, 360-362(2003).

15. J. S. Warsa, K. Thompson, and J. E. Morel, “Improving the Effi-ciency of Simple Parallel Sn Algorithms with Krylov Iterative Meth-ods,” Transactions of the American Nuclear Society, 89, 449-451 (2003).

16. Gordon L. Olson, Jim E. Morel, and Edward W. Larsen, “Chord LengthDistributions in Binary Stochastic Media in Two and Three Dimen-sions,” Transactions of the American Nuclear Society, 89, 307-309(2003).

17. J. E. Morel and Aaron M. Watson, “Homogenized Cross Sections forStatistical Media,” Transactions of the American Nuclear Society, 89,293-295 (2003).

18. M. Rosa, Y. Y. Azmy, and J. E. Morel, “Properties of the Sn-EquivalentIntegral Transport Operator in Slab Geometry,” Transactions of theAmerican Nuclear Society, 92, 737-740 (2005).

19. G. Davidson, J.D. Densmore, A.K. Prinja, and J.E. Morel, “Asymp-totically Correct Angular Distributions for Monte Carlo-Diffusion In-terfaces,” Transactions of the American Nuclear Society, 94, 517-520(2006).

20. J. E. Morel and J. S. Warsa, “A Lumped Bilinear-Discontinuous Sn

Spatial Discretization Scheme for R-Z Quadrilateral Meshes,” Trans-actions of the American Nuclear Society, 95, 873-875 (2006).

21. Massimilliano Rosa, Yousry Azmy, and Jim E. Morel, “Canonical Formof the Strength of Coupling Between Neighboring Spatial Cells forWDD Transport Methods in Homogeneous Configuration in 2-D Ge-ometry,” Transactions of the American Nuclear Society, 95, 585-587(2006).

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22. J. S. Warsa and J. E. Morel, “Numerical Solutions Algorithms for a Pn-Equivalent Sn Angular Discretization of the Transport Equation in 1-DSpherical Geometry,” Transactions of the American Nuclear Society,95, 881-883 (2006).

23. Michael S. Reed, Marvin L. Adams, and Jim E. Morel, “Transport Er-ror Estimates for Adaptive Refinement of Spatial Grids,” Transactionsof the American Nuclear Society, 95, 574-576 (2006).

24. J.D. Densmore, J.S. Warsa, R.B. Lowrie, and J.E. Morel, “LinearizedStability Analysis of Two Time Discretizations for the Compton-ScatteringFokker-Planck Equation,” Transactions of the American Nuclear Soci-ety, 99, 328-331 (2008).

25. Donald E. Bruss, Jim E. Morel, Jean C. Ragusa, “S2SA Precondition-ing for the Sn Equations with Strictly Positive Spatial Discretization,”Transactions of the American Nuclear Society, 107, 486-489 (2012).

26. Brian C. Franke, Don E. Bruss, Jim E. Morel, “Residual Monte Carlowith Discrete Scattering Angles in the 1-D Transport Equation,” Trans-actions of the American Nuclear Society, 109, 679-682 (2013).

27. S. R. Bolding and Jim E. Morel, “A High-Order/Low-Order Algorithmwith Exponentially-Convergent Monte Carlo for k-Eigenvalue Prob-lems,” Transactions of the American Nuclear Society, 111, 637-640(2014).

E. Refereed Articles Accepted for Publication

None.

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