Evaluation of computational models for fission and spallation reactions used in accelerator breeding and transmutation analysis code.

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概要

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• Computational models for spallation and fission reactions used in an accelerator breeding and transmutation code have been evaluated by performing calculations for thin targets of Bi, Pb, Th and U in the energy range of 501, 000 MeV. Proton and neutron non-elastic and fission cross sections have been derived from the counts of real collisions and fission events in the targets.<BR>Several fission models in combination with a spallation model are compared with the ex-perimental data due to Steiner et al. and Schimmerling et al. A good agreement has been obtained for a model with the level density parameters a<SUB>n</SUB>=A/10 and a<SUB>f</SUB>/a<SUB>n</SUB>, fitted to the data due to Il'inov et al. The mass dependence of the non-elastic cross sections has been calculated also with the use of the best fit model. A good agreement with the experimental data was obtained over a wide range of nuclear masses.

• 一般社団法人 日本原子力学会の論文

著者

• NAKAHARA Yasuaki

  Japan Atomic Energy Research Institute

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• Evaluation of computational models for fission and spallation reactions used in accelerator breeding and transmutation analysis code.

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