Experimental study on breakup reaction of beryllium and carbon induced with 14-MeV neutrons based on emitted charged-particle measurements

Abstract

Detailed measurements of α-particle emission double differential cross section for beryllium and carbon with 14-MeV incident neutrons were carried out. In order to identify contributing reaction channels to the 9 Be(n,2n + 2α )a nd 12 C(n,n � + 3α) reactions, we attempted to reproduce energy distributions of emitted particles by Monte Carlo calculations according to reaction kinematics of a lot of channels which contribute to the reactions. As for the 9 Be(n,2n + 2α) reaction, a contribution of the 9 Be(n,α) 6 He* channels and the simultaneous breakup channel was suggested to account for the energy and angular distribution of emitted α-particles and neutrons. As for the 12 C(n,n'+3α) reaction, the 12 C(n,α) 9 Be* channels were largely contributed and well reproduced the experimental data.