Ar40(n,α)S37Reaction at 14.4 MeV

Abstract
A gridded ionization chamber was used to detect charged particles produced when Ar40 was bombarded with 14.4-MeV neutrons. The energies of the α particles so produced yielded levels in S37 of 0.59 ± 0.10, 1.39 ± 0.09, 2.20 ± 0.05, and 2.83 ± 0.09 MeV. The Q value for the Ar40(n,α)S37 reaction was determined to be -2.41 MeV. Cross sections calculated for the reaction to the ground state and the four excited states are 2.1 ± 0.4, 0.3 ± 0.1, 3.1 ± 0.6, 3.5 ± 0.7, and approximately 0.3 mb. The total cross section for the Ar40(n,α)S37 reaction was determined to be 9.4 ± 1.0 mb. Comparisons between the results herein reported, other work, and theoretical predictions are made.