A New Comparison of Empirical and Semi-empirical Formulae for the (n, ~3He) Reaction Cross-sections at 14-15 MeV

摘要

New empirical and semi-empirical formulae have been suggested for the (n, ~3He) reaction cross-sections with dependent on asymmetry parameter, S - (N-Z)/ A. The (n, ~3He) reaction cross-sections at the energy of 14-15 MeV have been investigated for two different parameters groups by the classification of nuclei into 31 ≤ A ≤ 103 and 133 ≤ A ≤ 181. The obtained results have been compared with the other systematics and experimental data for the (n, ~3He) reaction cross-sections. Some improvement has been got in describing the (n, ~3He) reaction cross-sections compared with the existing relations.