Abstract
The nuclear data on n+239,240,242,244Pu reactions for the incident energy up to 200 MeV are consistently calculated and evaluated in order to meet the design requirements of Generation-IV reactors and accelerator driven systems. The optical model, the distorted wave Born approximation theory, the Hauser-Feshbach theory, the fission model, the evaporation model, the exciton model and the intranuclear cascade model are used in the calculation, and new experimental data are taken into account. Our data are compared with experimental data and the evaluated data from JENDL-4/HE and TENDL. In addition, the variation tendency of reaction cross sections related to the target mass numbers is obtained, which is very important for the prediction of nuclear data on neutron-actinides reactions because the experimental data are lacking.
Highlights
Recent decades, Generation-IV reactors and accelerator driven systems (ADS) are under study to reduce the nuclear accident probability and minimize the production of nuclear waste
JENDL-4.0 is adopted at incident energies En ≤20 MeV, and JENDL-HE2007 is adopted for 20 ≤ En ≤ 200 MeV, this evaluation was finished in 2001
MEND code [12] is used for 20≤ En ≤200 MeV, and the double differential cross sections of emitted particles are given by using the Kalbach systematics
Summary
Generation-IV reactors and accelerator driven systems (ADS) are under study to reduce the nuclear accident probability and minimize the production of nuclear waste. Pu isotopes are important fuel or radioactive waste, accurate nuclear data of neutron-induced reactions on Pu isotopes below 200 MeV are needed to reduce uncertainties in the design and operation of these facilities. There are two nuclear data libraries including n+Pu reaction data up to 200 MeV. The other is TENDL [2], which is the calculated results by TALYS code with default parameters. After the evaluation of these, some new experimental data were measured and some discrepancies with previous experimental data were observed. The purpose of this paper is to obtain new nuclear data for n+ 239,240,242,244Pu reactions below 200 MeV. 2, the theoretical models are introduced briefly, and in Sect.
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