Microscopic Calculation of Nucleon-Nucleon Cross Section in Nuclear Medium Within BHF Approach
Cai Yanhuang; Song Hongqiu(Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai 201800)U. Lombardo(INFN Sezion and Dipartimento di Fisica, Catania. Italy 57, Corso Italia, 95129 Catania, Italy)
Within the framework of Brueckner-Hartree-Fock (BHF) method, the total inmedium N-N cross section is calculated. A separable Paris potential for the N-N interaction and a continuous choice for the single particle spectrum are used. It is found that the in-medium cross section is strongly modified with increasing nuclear density, in particular at low energy. Some discussions and comparisons are also given.