Progress on nuclear reactions and related nuclear structure at low energies

• Published in: Hé jìshū Vol. 46; no. 8; p. 080006
• Main Authors: YANG Lei, LIN Chengjian, JIA Huiming, MA Nanru, WEN Peiwei, YANG Feng, ZHANG Huanqiao
• Format: Journal Article
• Language: Chinese
• Published: Science Press 01-08-2023
• Subjects: energies close to the coulomb barrier; exotic nuclear structure; nuclear reactions induced by heavy ions
• ISSN: 0253-3219
• DOI: 10.11889/j.0253-3219.2023.hjs.46.080006

Through the use of the accelerator facilities at home and abroad, the nuclear reaction group of the China Institute of Atomic Energy has made many remarkable achievements in the study of fusion-fission dynamics, fusion-enhancement mechanisms at sub-barrier energies, reaction dynamics induced by exotic nuclei, and the related exotic nuclear structure and proton decay. In this study, some representative achievements are reviewed briefly. (1) The fusion mechanisms at near-barrier energies were investigated systematically, and a self-consistent method to evaluate the coupled-channel effects was proposed. (2) Nuclear deformation parameters were extracted from backward quasi-elastic scattering, which offered evidence for hexadecapole shapes. (3) A surrogate capture method was developed, based on which the first 239Pu(n,2n) excitation function developed in China was derived. (4) Systematic studies of exotic decay spectroscopies for proton-rich nuclei in the sd-shell were performed, following which a β2p decay of 22S