学术报告:Microscopic optical potentials with isospin dependence in a Dirac-Brueckner- Hartree-Fock approach
报告题目:Microscopic optical potentials with isospin dependence in a Dirac-Brueckner- Hartree-Fock approach
报 告 人:马中玉 教授(中国原子能科学研究院)
报告时间:2013年1月11(星期五)日下午2:00-3:00
报告地点:嘉定园区学术活动中心一楼多功能厅
报告简介:
The relativistic optical model potential (OMP) for nucleon-nucleus scattering is investigated in the framework of the Dirac-Brueckner-Hartree-Fock (DBHF) approach using the Bonn-B one-boson-exchange potential for the bare nucleon-nucleon interaction. The nucleon self-energies in the nuclear medium are derived from the DBHF approach based on the projection techniques within the subtracted T -matrix representation. The Dirac potentials as well as the corresponding Schroedinger equivalent potentials for finite nuclei are evaluated in the improved local density approximation. Systimatic analyses of the nucleon-nucleus scatterings are studied with this microscopic approach of the OMP and compared to the experimental data, as well as the results obtained with a phenomenological OMP. A good agreement between the theoretical results and the measurements can be achieved.