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Abstract
摘要 |
The 1p-shell light elements (Li, Be, B, C, N, and O) have long been selected as the most important materials for improving neutron economy in thermal and fast fission reactors and in the design of accelerator-driven spallation neutron sources. A statistical theory of light nucleus reactions (STLN) is proposed to describe the double-differential cross sections for both neutron and light charged particle induced nuclear reactions with 1p-shell light nuclei involved in. The dynamics of STLN is described by the unified Hauser-Feshbach and exciton model, in which the angular momentum and parity conservations are strictly considered in equilibrium and pre-equilibrium processes. The Coulomb barriers of the incoming and outgoing charged particles, which significantly influence the open channels of the reaction, can be reasonably considered in the incident channel and different outgoing channels. In kinematics, the recoiling effects in various emission processes are strictly taken into account. The existing experimental double-differential cross sections of neutrons can be remarkably well reproduced, which indicates that the codes independently developed by our group are the powerful tool to set up “file-6” in the reaction data library with 1p-shell light nuclei involved in. |
