EVALUATION OF (γ,xn), (γ,sn), (γ,n), (γ,2n) и (γ,f) REACTIONS CROSS SECTIONS FOR Th-232, U-238, Np-237 AND Pu-239 BASED ON JOINT ANALYSIS OF DATA OBTAINED USING BOTH QUASIMONOENERGETIC ANNIHILATION AND BREMSSTRAHLUNG PHOTONS

Authors & Affiliations

Varlamov V.V., Peskov N.N.
M.V. Lomonosov Moscow State University, D.V. Skobeltsyn Institute of Nuclear Physics (SINP), Centre for Photonuclear Experiments Data, Russia

Abstract

The detailed systematical analysis of the (γ,xn), (γ,sn), (γ,n), (γ,2n) и (γ,f) reaction cross section data obtained by using quasimonoenergetic annihilation photon beams at Livermore (USA) and Saclay (France) was carried out for 4 actinides nuclei 232Th, 238U, 237Np and 239Pu. For overcoming of significant disagreements between the data and moving them into consistence the special method proposed before for taking into account both laboratories neutron multiplicity sorting procedure features was applied. The results of experiments obtained using bremsstrahlung were also used. For all 4 nuclei the jointly corrected reaction cross sections were evaluated.

Keywords
actinides, quasimonoenergetic annihilation photons beam, cross section, reactions (γ,xn), (γ,sn), (γ,n), (γ,2n),(γ,f), photoneutrons multiplicity

Article Text (in Russian, PDF)

References

UDC 539.17

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 1-2, 2008