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.