讲座题目：Calculations of reaction observables at drip-lines with the coupled-channel Gamow shell model
主讲人：Nicolas Michel 研究员
主持人：周先荣 教授
开始时间：2023-11-09 09:40
讲座地址👨🏿🏫：闵行校区物理楼223会议室
主办单位🪿：物理与电子科学学院
报告人简介：
Nicolas Michel is a Chief Scientist in Nuclear Physics at the Institute of Modern Physics in Lanzhou, China. He obtained his MSc at the University of Strasbourg (France) and PhD at the University of Caen Normandy (France). He worked in several nuclear research centers, including the GANIL in Caen, Michigan State University, Oak Ridge National Laboratory, Kyoto University and CEA, Center of Saclay. He was awarded a Standard Fellowship for Foreign Researchers by the Japanese Society for the Promotion of Science. He is the author of 1 monograph and over 65 scientific papers. His research focuses on the study of resonant nuclei and molecules using the continuum shell model formalism. He also developed parallel codes to efficiently calculate many-body weakly bound and unbound nuclear states.
报告内容⬇️：
The Gamow shell model (GSM) has shown to be a powerful tool to study nuclear structure at drip-lines. It is a shell model approach based on the Berggren basis, consisting of bound, resonance and scattering states. GSM has been extended to the coupled-channel GSM (GSM-CC) in order to calculate reaction observables. GSM is thereby used to generate nuclear targets, while coupled-channel equations provide the many-body scattering states of GSM-CC. It is then possible to calculate reaction cross sections involving drip-line nuclei. We will then present the most recent applications of GSM-CC, of both experimental and astrophysical interests. They consist of nucleon-target elastic scattering and radiative capture cross sections involving weakly bound and resonance states of light nuclei, where continuum coupling is prominent. While GSM-CC was initially devised with nucleon projectiles, it is currently extended to the use of many-nucleon projectiles. The first applications in this context are the calculations of deuteron-alpha elastic scattering cross sections and (d,p) reaction cross sections with a calcium target. The elastic scattering cross sections of triton-alpha collisions have also been considered. Many-nucleon projectiles have lead to difficulties absent from the one-nucleon case, however. Possible solutions for that matter will be discussed.
