Neutron Cross Section Evaluation of Tungsten and Tantalum

作者：Kim H I^*; Lee C W; Kim D H; Lee Y O

来源：Nuclear Data Sheets, 2014, 118: 151-154.

DOI：10.1016/j.nds.2014.04.023

The evaluations of neutron cross sections and covariances are presented for tungsten and tantalum which are considered as a prime candidate of plasma facing materials in fusion reactors and/or a structural material of the Korea Helium Cooled Ceramic Reflector (Ko HCCR) Test Blanket Module (TBM). The Fusion Evaluated Nuclear Data Library (FENDL-2.1) has been employed as the nuclear data for the neutronics analysis to obtain the optimal design parameters for Ko HCCR TBM. However, the neutron cross sections and energy and/or angular dependent neutron spectra from FENDL-2.1 showed some discrepancies with the differential and integral measured data available for tungsten and tantalum. In response to these situations, the neutron cross section for Ta-181 and W-180,W-182,W-183,W-184,W-186 have been newly evaluated using the up-to-date nuclear reaction code and the measured data available.

• 出版日期2014-4