The main points of our program

Program of Experimental Studies in the frame of the project

“Energy plus Transmutation” in JINR,Dubna, RussiaPresented by M.I.Krivopustov

The main points of our program

The Detector System consists of:

The Schema of experiment

U-blanket and transmutation samples

Schema experimental setup

Some results with proton beams :

Some results with deuteron beam:

Irradiation of U/Pb assembly with deuteron beam

Definition of reaction velocity- R(A) and yield of residual nuclei- B(A)

• R(A)=N(A)/(n·I); B(A)=N(A)/(m·I); R(A)=B(A)·(As/Navo);

• Where:• N(A) number of nuclei of isotope A produced in an sample• n- and m-number of atoms in sample and mass in grams,

respectivily• I -deuteron fluence• Navo- the number of Avogadro.

Two important plutonium isotopes (Pu-238 and Pu-239) were irradiated also on the top of second section of target-blanket system (near the same place where Np-237 and I-129 and activation threshold detectors were placed) are presented in next Table

Residual nuclei observed in I-127,I-129, Np-237 samples; R-value results for deuteron and proton beam (Remark: for Np-237 the of

residual nuclei for deuterons 2,52 GeV is systematically higher, almost for factor 1.3, then in the case of 2.0 GeV protons)

Residual nuclei obseved in Pu-238 and Pu-239 samples: R- and B- values results for

deuteron beam 2,52 GeV

Conclusion

• We have present only some couple results of our collaboration which could be important from radio ecological aspect.

• More details you can find, for example, in:

M.I.Krivopustov et al., JINR-Preprint R1-168-2000, Dubna,2000//Kerntechnik 2003,V.68,p.48;

J.Adam et al., AIP Conf.Proc. V.769, Int. Conf. Nucl. Data for Sci. and Techn., Santa Fe (2004), P. 1560-1563.