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IAEA Nuclear Data: IAEA Nuclear Data: the the RReference eference IInput nput PParameter arameter LLibrary ibrary (RIPL) for nuclear reaction calculations(RIPL) for nuclear reaction calculations
Roberto Capote, IAEA/NDS, Vienna, AustriaRoberto Capote, IAEA/NDS, Vienna, Austria
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
M. Avrigeanu Inst. de Fizica si Inginerie Nucleara “Horia Hulubei”, Romania T. Belgya Institute of Isotope and Surface Chemistry, HungaryO. Bersillon Centre d’Etudes Nucleaires de Bruyeres-le-Chatel, FranceR. Capote IAEA Nuclear Data SectionT. Fukahori Nuclear Data Center, JAEA, JapanS. Goriely Institut d’Astrophysique, Université Libre de Bruxelles, BelgiumY. Han China Institute of Atomic Energy, PR China M. Herman National Nuclear Data Center, BNL, USAS. Hilaire DPTA/SPN, CEA/DAM Ile de France, FranceA.V. Ignatyuk IPPE, Obninsk, Russian FederationS. Kailas Bhabha Atomic Research Centre, IndiaA. Koning Nuclear Research and Consultancy Group, The NetherlandsP. Obložinskỷ Brookhaven National Laboratory, USAV. A. Plujko Taras Shevchenko National University, Kiev, Ukraine E. S. Soukhovitskii Joint Institute of Energy and Nuclear Research, Belarus P. Talou Los Alamos National Laboratory, USAP. G. Young Los Alamos National Laboratory, USAG. Zhigang China Institute of Atomic Energy, PR China
RIPL-II and RIPL-III participants
RIPL-III participants
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
A long time ago before RIPL …
(Recommended/any) inputs for nuclear reaction calculations ?
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
RIPL BackgroundNuclear reaction theory: sufficiently advanced to meet
most of the requirements for a number of applicationsMajor sources of uncertainty are the input parameters
needed to perform theoretical calculations
Improve the methodology of nuclear data evaluation by increasing predictive power, accuracy and reliability of theoretical calculations by nuclear reaction model codes
RIPL Objective
Improved description of nuclear reactions, easier calculations allowing for a much better understanding
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
IAEA Nuclear Data Section has addressed these needs through a series of Coordinated Research Projects dedicated to the production of a Reference Input Parameter Library (RIPL)
1994 – 2008The longest running IAEA/NDS project
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Reference Input Parameter Library
1994-1997: RIPL-1 starter file (http://www-nds.iaea.org/ripl/ )
Second CRP was initiated on “Nuclear Model Parameter Testing for Nuclear Data Evaluation (Reference Input Parameter Library: Phase II)”, and completed in 2003. Revision, extension and validation of the original RIPL-1 Starter File to produce a consistent RIPL-2 library of recommended input parameters.
Electronic Starter File (known as Reference Input Parameter Library-1) was developed and made available to users throughout the world in 1997 (compilation)
1998-2003: RIPL-2 database (http://www-nds.iaea.org/RIPL-2/)Main goal: Energy applications, E<20MeV
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
RIPL-3 additional requirementsReactions at high energies for ADS (up to 150
MeV), production of medical radioisotopes (up to 100 MeV) and radiotherapy (up to 250 MeV)
Reactions on nuclei far from stability for ADS and astrophysics
Charged-particle reactions for all non-energy applications
Number of simple routines for the calculation of basic input data from the parameters contained in the library will be provided to reduce a risk of misusing the parameters
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Reference Input Parameter LibraryThird (and final) CRP: “Parameters for Calculation of Nuclear Reactions of Relevance to Non-Energy Nuclear Application (Reference Input Parameter Library: Phase III)” started in 2003. The project is close to completion. The update of the RIPL-2 database will be released in September 2008. 2003-2008: RIPL-3 database (http://www-nds.iaea.org/RIPL-3/)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
1.- MASSESFRDM file including Audi et al. (2003) massesSkyrme HFB file (HFB-14) including Audi et al. (2003) massesSkyrme HFB spherical density distributions (HFB-14)Gogny HFB spherical density distributions (D1S)
rms(M) = 650-750 keV on 2149 (Z ≥ 8) experimental masses (Audi et al., 2003)
To be compared with- FRDM predictions: rms(M) = 676 keV (2149 Z ≥ 8 nuclei)- Previous HF predictions:
Traditional Skyrme forces: rms(M) >> 2 MeV (120 e-e sph)Ex. Oak Ridge "Mass Table" based on HFB with SLy4
rms(M)=4.7MeV on 570 e-e sph+def nuclei
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Comparison with experimental masses(2149 nuclei: Audi, Wapstra & Thibault 2003)
-4
-2
0
2
4
0 20 40 60 80 100 120 140 160
ΔM
[MeV
]
N
M(Exp)–M(HFB-14)
HFB14 model: S. Goriely, M. Samyn, J.M. Pearson, (2007) Phys. Rev. C75, 064312
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
HFB14 vs. experimental data
2.5
3
3.5
4
4.5
5
5.5
6
6.5
2.5 3 3.5 4 4.5 5 5.5 6 6.5R
exp [fm]
Rth [
fm]
0
0.02
0.04
0.06
0.08
0.1
0 1 2 3 4 5 6 7 8ρ ch
[fm
-3]
r [fm]
32S
1 2 3 4 5 6 7 8r [fm]
208Pb
Charge radii Charge densities
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
10-2
10-1
100
101
102
0 50 100 150 200 250
Dth/D
exp
BSk9
A50 100 150 200 250
A
BSk13
Impact of the HFB pairing strengthon nuclear level densities at U=Sn
HFB+combinatorial versus experimental s-wave spacings
BSk13=BSk14
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
0
1
2
3
4
5
6
7
8
0 0.5 1 1.5 2
E coll [M
eV]
β2
240Pu
HFB14: A modified collective correction!! of particular relevance at large deformation --> Fission calculations !!
• a perturbative cranking correction for rotational correlations• a phenomenological correction for “vibrational” correlations
Ecoll = b Erotcrank tanh cβ2( )
Ecoll = b Erotcrank tanh cβ2( )
+ d Erotcrank exp −l(β2 −β2
0)2[ ]
rotational
rotational + vibrational
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Fission barriers vs. « experimental » data
52 nuclei with Z ≥ 88
45 nucleirms = 2.0 MeV
rms = 1.2 MeV
NO “VIBRATIONAL” CORRECTION
-4-3-2-101234
B(e
xp)-
B(th
) [M
eV]
-4-3-2-10123
135 140 145 150 155
B(e
xp)-
B(th
) [M
eV]
N
Bin(Exp) – Bin(HFB)
Bout(Exp) – Bout(HFB)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Bin(Exp) – Bin(HFB)52 nuclei with Z ≥ 88
-4-3-2-10123
135 140 145 150 155
B(e
xp)-
B(th
) [M
eV]
N
-4-3-2-101234
B(e
xp)-
B(th
) [M
eV]
Bout(Exp) – Bout(HFB)45 nucleirms = 0.65MeV
rms = 0.67 MeV
WITH “VIBRATIONAL” CORRECTIONFission barriers vs. « experimental » data
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
2.- DISCRETE LEVELS SCHEME
124328117675Number of newly determined ICC2494523184Number of known ICC
67796058Number of spins chosen from list by spin distributions36783516Number of spins inferred from spin distributions44413581Number of spins inferred from gamma transitions
3250738912Number of unique spins with parenthesis6333968858Number of unique spins
203449200944Number of gammas are processed135406138595Number of levels processed
2113877Number of records read in3020Number of nuclei processed20072005DERIVED FROM ENSDF
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
3.- RESONANCES
0 50 100 150 200 2500
2
D0(RIPL-2)/D0(Mug2006)s-resonance spacing
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Analysis of the resonance parameters for 238UThe set of resonances at the energy region up to 20 keV contains 898 s-wave resonances, 849 p-wave resonances with J=1/2 and 1565 p-wave resonances with J=3/2 [L.Leal et al., Nuclear Data for Science and Technology, Santa Fe, 2004, p.276].
0 50 100 150
10
100
1000
Num
ber o
f res
onan
ces
sqrt(Γn0), eV1/2
U-238s-wave
Nr=897, N0=989+/-2D0=20.2+/-0.2, S0=1.07+/-0.07
0 5 10 15 200
200
400
600
800
1000
Num
ber o
f res
onan
ces
Neutron energy, keV
D0=20.2+/-0.2 eV
0 5 10 15 200
5
10
15
20
Sum
of r
educ
ed w
idth
s, k
eV
Neutron energy, keV
S0=1.07+/-0.07
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Average resonance parameters for 238U:D0, eV D1, eV S0, 10-4 S1, 10-4
1965, Gilbert-Cameron 17.7±0.7 -- -- --1979, Rohr et al. 21.5±2.2 -- 1.02 ±0.16 --1984, Mughabghab 20.9±1.1 7.2±0.4 1.2±0.1 1.7±0.31986, Ignatyuk et al. 21.7 ±0.9 7.3±0.5 1.15±0.12 1.7±0.51996, Beijing, RIPL-1 21.0 ±0.05 -- 0.93±0.06 --2002, RIPL-2 (10 keV) 20.8±0.3 7.7±1.0 1.03±0.08 1.6±0.42004, Leal et al., (20 keV) -- -- 1.07±0.07 1.71±0.072006, Mughabghab 20.26±0.72 7.42±0.23 1.29±0.13 2.17±0.192007, present (20 keV) 20.2±0.2 7.59±0.05 1.02±0.02 1.62±0.05
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
The set of resonances at the energy region up to 6.5 keV contains 203 s-wave resonances and 196 p-wave resonances, which were inserted into the ENDF/B-VII file from the Mughabghab-2006. It is impossible to describe the PT-distributionwith Do=14.9+/-.6 eV /Mug2006/.
0 50 1001
10
100
Num
ber o
f res
onan
ces
sqrt(Γn0), eV1/2
Ag-107s-wave
Nr=203, N0=290+/-5D0=22.4+/-0.3, S0=0.47+/-0.05
0 2 4 60
50
100
150
200
250
Num
ber o
f res
onan
ces
Neutron energy, keV
Ag-107s-wave
D0=22.4+/-0.3 eV0 2 4 60
1
2
3
Sum
of r
educ
ed w
idth
s, k
eV
Neutron energy, keV
Ag-107s-wave
S0=0.47+/-0.05
Analysis of the resonance parameters for 107Ag
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
D0, eV D1, eV S0, 10-4 S1, 10-4
1965, Gilbert-Cameron 31±6 -- -- --1979, Rohr et al. 24.0±2.8 -- 0.41 ±0.13 --1984, Mughabghab 16±3 -- 0.38±0.07 3.8±0.61986, Ignatyuk et al. 22 ±2 -- 0.42±0.05 3.8±0.51996, Beijing, RIPL-1 22.6 ±0.09 -- 0.54±0.04 --2002, RIPL-2 22.0±0.4 -- 0.40±0.06 3.8±0.82006, Mughabghab 14.9±0.6 8.49±0.25 0.46±0.05 3.76±0.312007, present (B-VII) 22.4±0.5 9.1±0.6 0.47±0.05 2.2±0.3
Average resonance parameters for 107Ag
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
List of analyzed differences:Nucleus Mug81/84 RIPL-2 Mug06 Present
D0, eV S0 D0, eV S0 D0, eV S0 D0, eV S0
Cm-243 1.1±.2 1.5±.3 .75 ±.15 1.5±.3 1.11±.07 1.20±.22 .69±.06 1.25 ±.15 Am-243m .40±.08 1.3±.2 .40±.08 1.3±.2 .29±.02 1.47±.25 .26±.06 1.3±.1 Pa-232 -- -- .75±.15 .65±.15 .47±.04 1.22±.26 .48±.12 .80±.15Hg-201 -- -- 90±30 1.2±. 5 233±20 .80±.19 70±30 1. 3±.5Hg-198 105±33 -- 105±35 1.3±.5 69±3 -- 100±20 1.3±.3 Dy-156 2.7±.4 -- 4.8±1.6 1.8±.4 2.7±.4 3.3 ±1.3 2.8±.3 1.8±.4 Eu-152 .25±.03 -- .56±.10 1.4±.6 .25±.03 -- .35±.05 1.9±.5Te-130 870±140 .16±.05 1500±500 .2±.1 1130±180* .16±.05 1040±100* --Te-128 260±30 .25±.10 740±150 .2±.1 1510±375 .26±.15 1460±300 .20±.07 I-129 -- -- 30±3 .5±.1 19.0±1.4 .42±.07 13.6±.3 .35±.05 I-127 9.7±.8 .8±.1 15±3 .8±.2 9.7±.8 .6±.1 15.4±.5 .71±.08Ag-107 16±3 .38±.07 22.0±.4 .40±.06 14.9±.6 .46±.05 22.4±.5 .47±.05Pd-110 95±10* .40±.06 150±50 .25±.15 334±43 .47±.17 280±50 .30±.10 Pd-106 67±4* .34±.04 270±90 .6±.3 174±25 .42±.19 144±32 .65±.15
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
4.- OPTICAL MODEL1. Dispersive CC potentials for nucleon induced reactions
Rigid rotor: Actinides, W-Ta-Hf, Au, Mn, Rh, …Soft rotor: ZrCapote, Soukhovitskii, et al (2005-2008)Kunieda et al (2008)
2. Soft rotor CC OMPs (Soukhovitskii et al, 2004)3. Global dispersive spherical potentials
Neutrons – Morillon & Romain (2005)Protons – Li & Cai (2008)
4. OMPs for complex charged particlesAlphas, Deuteron, Tritons
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
DISPERSIVE OMPs
Molina, Capote, Quesada and Lozano PRC65(2002) 034616
+ Powerful CC OMP fitting code OPTMANE. Soukhovitskii, S. Chiba, et al
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Dispersive Coupled Channels OMP
Dispersive coupled channel analysis of nucleon scattering from 232Th up to 200 MeV
Soukhovitskii, Capote, Quesada and Chiba, PRC72 (2005) 024604
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Dispersive Coupled Channels OMP
Is a global coupled-channel dispersive optical model potential for actinides feasible?
Capote, Soukhovitskii, Quesada and Chiba, PRC72 (2005) 064210
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
1 10 100-0.04
-0.02
0.00
0.02
0.04
0.06
Dietrich 2003 Guenther 1982 (shifted by -0.008) Rigid rotor DCC OMP (shifted by +0.006)
[σto
t(W-1
86) -
σto
t(W-1
82)]
/{[σ
tot(W
-186
) + σ
tot(W
-182
)]/2}
ENERGY [MeV]
Dispersive Coupled Channels OMP
DCC OMP for tungsten nuclidesCapote, Soukhovitskii, Quesada and Chiba, Varenna 2006; NEMEA-3
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
A global DCC OMP for actinidesCapote, Soukhovitskii, Quesada, Chiba and Bauge, JNST45 (2008) 333
Complete table in Proceedings of the International Conference on Nuclear Data forScience and Technology, April 22-27, 2007, Nice, France, EDP Sciences, 2008
DCC OMPs for 31 actinides, tungsten and tantalum nuclei derived using approximated Lane consistent formulation with Coulomb corrections
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Are DCC OMPs Lane consistent ?
Lane equations
DCC OMPIsospin dependence
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Dispersive Coupled Channels OMP
Approximate Lane consistency of the dispersive coupled-channels potential for actinidesCapote, Soukhovitskii, Quesada and Chiba, PRC76 (2007) 057602
238U(p,n)
θ(deg.)
0 30 60 90 120 150 180
dσ/d
Ω(b
/sr)
10-5
10-4
10-3
26 MeV, Hansen0+
2+
4+
0++2++4+
Lane, sum of 0++2++4+
232Th(p,n)
θ(deg.)
0 30 60 90 120 150 180
dσ/d
Ω(b
/sr)
10-5
10-4
10-3
26 MeV, Hansen25.8 MeV, Schery0++2++4+
0+
2+
4+
Lane, sum of 0++2++4+
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
(3387)
(1607)(1928)
(2748)
(3124)
(>3400)
SOFT ROTOR COUPLED SCHEME (7 levels)
--
NUDAT v 2.4
Zr-90 DCCOMP based on soft rotor
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
DCC OMP - soft rotor couplings
Incident Energy (MeV)
Cro
ss S
ecti
on
(b
arn
s)
1 10 102
10
ENDF/B-VII.0:ZR-90(N,TOT)BROND-2.2:ZR-90(N,TOT)DCCOMP (this work)
1993 Finlay1985 Fedorov1980 Pasechnik1977 De1977 Djumin1975 Guenther1973 Stooksberry1973 Green
n + 90Zr
Soukhovitskii, Capote, Quesada and Chiba, Unpublished
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
90Zr (Wang, En=24.0 MeV)
θcm(deg.)
0 30 60 90 120 150 180
dσ
/dΩ
(b/s
r)
10-6
10-5
10-4
10-3
10-2
10-1
1000+, Eq=0. MeV
2+, Eq=2.1865 MeV
3-, Eq=2.7479 MeV, data *0.01
Calculated data
90Zr (Dickens, Ep=12.7 MeV)
θcm(deg.)
0 30 60 90 120 150 180
dσ
/dΩ
(b/s
r)
10-7
10-6
10-5
10-4
10-3
10-2
10-1
100
101
102
0+, Eq=0. MeV
02+, Eq=1.75 MeV
2+, Eq=2.18 MeV
3-, Eq=2.74 MeV, data *10-3
Calculated data
n + 90Zr p + 90Zr
DCC OMP - soft rotor couplingsSoukhovitskii, Capote, Quesada and Chiba, Unpublished
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
5.- LEVEL DENSITIESBased on OBSERVABLES:RIPL-3 discrete levels (2) and Neutron resonances (3)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
A NEW global combinatorial NLD formulaS. Hilaire & S.Goriely (2007)
• Particle-hole as well as total parity-, spin- and E-dependent NLD• Deviation from the statistical limit at low energies (discrete counting)
50 100 150 200 25010-2
10-1
100
101
102
A
Dex
p / D
th
http://www-astro.ulb.ac.be/Html/nld_comb_ph.html
292 exp. D0
frms=2.30
s-wavep-wave
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
50 100 150 200 250
α
A
-4
-2
0
2
4
50 100 150 200 250
δ [M
eV]
A
Renormalization factors to reproduceD0 and cumulative levels
ρrenorm (U) = eα U−δ ρHFB(U −δ)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
HFB LD vs OSLO data
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Defined local and global systematicsUnpublished (Koning, Hilaire, Goriely)
Impact of LDs on cross section calculations
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
6.- GAMMA RAY STRENGTH FUNCTIONSLorentzian, EGLO, MLO, SMLO, QRPA-HFB14
(See V. Plujko presentation tomorrow)The E1 gamma-decay strength
function on 144Nd for U=Bn
The E1 photoabsorptioncross section on 144Nd
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Comparison of the photoabsorptioncross section calculations on 40Cawith exp.data (V.A. Erokhova et alIzvestiya RAN. Seriya Fiz. 67 (2003) 1479)
Panel (a) shows calculations withGDR parameters from systematics(RIPL); (b) - calculations withGDR parameters obtained fromfitting the exp. data.
HFB-QRPA is microscopicapproach given by S.Goriely et al.
MSA - semi classical methodproposed by V.Abrosimov,O.Davidoskaya.
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Comparison of the photoabsorptioncross sections on 208Pb. Panel b shows the low-energy partof the cross sections. Experimentaldata are taken from A. Veyssiere, H.Beil, R. Bergere, P. Carlos, A. Lepretre, Nucl.Phys. A159 (1970) 561 in panel a andfrom V.V. Varlamov, M.E. Stepanov, V.V.Chesnokov, Izvestiya RAN. Seriya Fiz. 67(2003) 656. in panel b. The SLOparameters are taken from theRIPL-2 library.
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
7.- FISSION
Bin(Exp) – Bin(HFB)52 nuclei with Z ≥ 88
-4-3-2-10123
135 140 145 150 155
B(e
xp)-
B(th
) [M
eV]
N
-4-3-2-101234
B(e
xp)-
B(th
) [M
eV]
Bout(Exp) – Bout(HFB)45 nucleirms = 0.65MeV
rms = 0.67 MeV
HFB14 fission barriers vs. « experimental » data
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
0
1
2
3
4
5
6
7
8
0 0.5 1 1.5 2 2.5 3
U235
U236
U237
U238
U239
U240
E-E G
S [MeV
]
β2
The U isotopes
Projection of the static path along the quadrupole deformation parameter β2
HFB14
0
1
2
3
4
5
6
7
8
0 0.5 1 1.5 2
Cm242Cm243Cm244Cm245Cm246
Cm247Cm248Cm249Cm250Cm251
E-E G
S [MeV
]
β2
The Cm isotopes
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
0
2
4
6
8
10
0 0.5 1 1.5 2 2.5
Cm270Cm272Cm274Cm276Cm278Cm280
E-E G
S [MeV
]
β2
280Cm: N=184 shell closureThe Cm isotopes in the very n-rich region: 270 ≤ A ≤ 280
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
NEW EMPIRE VERSION 3.0
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
Full damping vs Partial damping.
Incident Energy (MeV)
Cro
ss S
ecti
on
(b
arn
s)
10-1 1
10-6
10-5
10-4
10-3
10-2
10-1
EMPIRE Part.damp.EMPIRE full damp.EMPIRE no class-II
2006 N_tof2001 Shcherbakov1991 Fursov1986 Kanda1986 Goverdovskij1985 Anand1985 Kanda1983 Meadows1982 Behrens1980 Blons1980 D’hondt1978 Nordborg1975 Blons1971 Muir1946 Williams
IMPROVED FISSION MODELLING:BARRIERS + WELLS (absorption)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
original HFB
normalized HFB
0.5450.4902.2705.9755.04323492
0.609
0.128
Δgs
-
-
Vc
0.4986.0295.51723692
0.0356.2735.39123592
agsVbVaAZ
0.000.000.5450.4902.2705.9755.44023492
0.609
0.400
Δgs
0.498
-0.080
ags
0.00
0.00
Δsdl
-
-
Vc
0.006.0295.51723692
0.005.8005.54523592
asdlVbVaAZ
RIPL-2
23492
5.6705.00023692
6.0005.25023592
VbVaAZ
235U(n,f)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
238U(n,f)RIPL-2
5.5006.30023892
6.1506.40023792
6.0006.45023992
VbVaAZ
original HFB
0.371
0.149
0.253Δgs
3.681
3.808
4.219
Vc
0.5386.5425.99023992
0.4806.4775.92823892
0.2016.4135.55323792
agsVbVaAZ
normalized HFB
0.371
0.149
0.253Δgs
0.538
0.480
0.201
ags
0.00
0.00
0.00Δsdl
3.681
3.745
4.219
Vc
0.006.0686.07423992
0.006.1725.80223892
0.005.9355.92523792
asdlVbVaAZ
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
238Pu(n,f)RIPL-2
5.2435.96023894
5.0655.54523794
5.3315.96323994
VbVaAZ
original HFB
normalized HFB0.450
0.000
0.000Δgs
0.1825.3315.96323994
0.4005.2435.96023894
0.1345.0655.54523794
agsVbVaAZ
1.000
0.000
0.000Δgs
1.600
1.200
0.134
ags
0.00
0.00
0.00Δsdl
0.005.8406.05023994
0.005.2435.96023894
0.005.0655.34923794
asdlVbVaAZ
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
CONCLUDING REMARKSOver many years, IAEA staff within the Nuclear Data Section have successfully initiated and overseen the completion of various projects dedicated to satisfying a wide range of user demands for enhancements in the quantification and quality of neutron reaction cross sections.
RIPL-4 hopefully will contain SMMC level densities
The RIPL-3 database represents considerable advancements in the adoption and use of evaluated and highly credible nuclear data both for energy and non-energy applications
One of the most significant database developments have involved important advances in the evolution of a complete and consistent set of input parameters for the calculation of a wide range of nuclear reactions.
Efforts will continue to develop this database further, and monitor all studies that impact and could possibly improve their contents.
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
RIPL
Experimental data: masses, discrete levels, deformationsModel parameters: OMP, NLD, gamma, fission,etc.
FINAL GOAL: EVALUATION (ENDF-6 formatted file)or NUCLEAR REACTION CALCULATION
Nuclear Data Production
EMPIRE 2.19 (BNL/IAEA) / TALYS (NRG) / GNASH (LANL)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
LD: IBM collective states
R. Capote, A. Ventura, F. Cannata , J.M. Quesada, Phys Rev C71, 064320 (2005)“Level densities of transitional Sm nuclei” (Monte Carlo combinatorial + IBM coll)
SNP2008, July 8-11Athens, OH, USA
Roberto Capote, IAEA Nuclear Data SectionE-mail: [email protected]
LD: IBM collective states
R. Capote, A. Ventura, F. Cannata , J.M. Quesada, Phys Rev C71, 064320 (2005)“Level densities of transitional Sm nuclei”