3.25 Fission cross section measurement for Am-242m with TOF methods in energy region

摘要

The neutron-induced fission cross section for Am-242m was measured with time-of-flight(TOF) method from 0.003 eV to 30 eV. We already measured the cross section using Kyoto University lead showing-down spectrometer (KULS) from 0.1 keV and using the standard thermal neutron field (D_2O facility) at 0.025 eV. The present result was compared with both of them. Although the JENDL-3.2 and ENDF/B-VI were slightly higher in the energy regon lower than approx 1 eV, the present reuslt agreed with the KULS result and D_2O result within their experimental error.