Model Calculation ofn+¹²C Reactions from 4.8 to 20 MeV

Statistical theory of light-nucleus reactions and application to theBe9(p,xn)reaction

“…Using the non-relativistic triangle relationship v c m 2 = v c M 1 + v r m 2 , we can obtain [29,30] ε c m 2 = ε r m 2 (1 + 2γ cos Θ + γ 2 ),…”

New calculation method of neutron kerma coefficients for carbon and oxygen below 30 MeV

“…Obviously, the terms in formula (4) contain more comprehensive parameter information than those in formula (3). For nonelastic processes of neutron-induced light nucleus reaction, the LUNF code [10] was used to calculate the cross sections of different channels (including elastic and inelastic channels), angular distributions, and the double-differential cross sections. This code treats neutron-induced light nucleus reactions as proceeding through an initial preequilibrium emission mechanism between discrete levels, followed by a process of sequential particle emission from decaying compound nuclei, until the final residual nucleus attains its ground state via γ -ray emission.…”

“…These discrete levels have individual spins and parities which effect different particle emissions. To deal with the above problems, an attempt at describing the neutron-induced light nucleus reaction [10] was carried out with the united Hauser-Feshbach and exciton model [36]. Fortunately, these efforts were successful.…”

“…(12)] of the first residual nuclide M 1 through tediously complicated mathematical calculations [10]:…”

“…III. Based on the unified Hauser-Feshbach and exciton model, a statistical theory of neutron-induced light nucleus reaction was proposed in 1999 [10]. The key point of this statistical theory is that it properly takes into account the conservation of energy, angular momentum, and parity in the emissions from the discrete levels of the compound nucleus to the discrete levels of the residual nuclei with the preequilibrium mechanism, which dominates the reaction processes in neutron-induced light nucleus reactions.…”