Trends and establishment of shell effects in (n,d), (n,t) and (n,3He) reaction cross sections around 14 MeV

The systematic behaviour of (n, d), (n, t) and (n, 3He) reaction cross sections has been studied around 14 MeV neutron energy. The empirical relations for these reactions cross sections have been obtained, which show fairly good fits with the experimental values. The shell effects have been established at magic nucleon numbers for (n, d), (n, t) and (n, 3He) reaction cross sections at 14 MeV neutron energy. The odd-even effects have also been observed, as the cross sections of odd-mass nuclei are higher than their neighbouring even-even nuclei. (author). 22 refs., 6 figs