Measuring the Neutron Signature of the t→d+n Triton Breakup Reaction and the Angle-Dependent Differential Cross Section of ~6Li(n,f)~4He at 2.32 MeV

摘要

The continuous neutron spectrum from the t→d+n breakup reaction can best be extracted in the ~3H(p,n)~3He and ~4He(t,n)~6 Li reactions because of minimum neutron background in both cases. Only for the latter reaction are neutron background spectra also available. These data were measured at 11.88-MeV triton energy at eight angles between 0 and 120 deg. As a test for the validity of the procedure, angle-dependent differential cross sections of ~4He(t,n)~6Li were extracted and converted to ~6Li(n,t)~4He at E_n = 2.32 MeV by detailed balance calculation thus contributing to the R-matrix analysis of the ~7Li system. The double-differential and neutron energy integrated cross sections at that energy are given as well as those for the triton breakup of the time-reversed reaction.