EVALUATION OF (gamma,XN), (gamma,SN), (gamma,N), (gamma,2N), AND (gamma,F)REACTIONS CROSS SECTIONS FOR ACTINIDES NUCLEI 232Th, 238U, 237Np, AND 239Pu:CONSISTENCY BETWEEN DATA OBTAINED USING QUASIMONOENERGETIC ANNIHILATION AND BREMSSTRAHLUNG PHOTONS

The detailed systematical analysis of the (gamma,xn), (gamma,sn), (gamma,n), (gamma,2n) and (gamma,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 used
bremsstrahlung were also used. For all 4 nuclei the jointly corrected reaction cross sections were evaluated.
The work was carried out in the SINP Department of Electromagnetic Processes and Atomic Nuclei Interactions and partially supported by grant of President of Russia N SS-1619.2003.2.

Document number: 2007-8/829

Authors: V.V.Varlamov, N.N.Peskov

Email: varlamov@depni.sinp.msu.ru

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