Topic（题目）:Description of structure and reaction observables of drip-line nuclei with the Gamow Shell Model

Speaker（报告人）：Nicolas Michel (Institute of Modern Physics)

Date（时间）：2021年1月16号（周六）下午4:00-5:30

Place（地点）：北京大学加速器楼402 会议室

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Abstract:

Nuclei far away from the valley of stability are actively studied at experimental and theoretical levels due to their unusual features. For example, standard nuclear magic numbers can disappear at drip-lines, and nuclei at drip-lines can bear halos or be unbound with respect to nucleon emission. Models developed for well-bound nuclei are no longer sufficient to describe drip-line nuclei. A nuclear model able to treat drip-line nuclei consistently is the Gamow Shell model (GSM). GSM is a configuration interaction model based on the use of bound, resonance and scattering basis states, so that continuum coupling is present at basis level. Inter-nucleon correlations are taken into account via the use of configuration mixing, so that both structure and reaction degrees of freedom are included in GSM.

We will present applications of GSM concerning light nuclei. In particular, GSM has been used in a no-core approach with realistic interactions, so that unbound systems bearing A=3-5 nucleons could be precisely studied. When the number of nucleons increase, it is more convenient to use the core + valence nucleon picture. For that matter, effective interactions have been fitted and statistically analyzed, or directly calculated from realistic nucleon-nucleon interactions. Spectra, densities and correlation densities will be depicted. GSM has also been extended to the study of reaction observables. Scattering and radiative capture cross sections of light nuclei involving nucleon and deuteron projectiles will be presented in this context.

Biography（个人简介）：

Ph.D. in GANIL obtained in 2002

Post-doctoral employments in ORNL, Kyoto University, CEA Saclay, University of Jyvaskyla, MSU, GANIL from 2003 to 2015

Visiting professor in MSU from 2016 to 2018

Visiting professor in PKU in 2018

Professor at IMP since 2019

Contact Person（联系人）：许甫荣（frxu@pku.edu.cn）