核内核子－核子非弹散射截面（Ⅰ）  

In-medium Nucleon-Nucleon Inelastic Scattering Cross Section(Ⅰ)

作　　者：茅广军[1] 李祝霞[1] 卓益忠[1] 余自强[1] 

机构地区：[1]中国原子能科学研究院,南开大学物理系

出　　处：《高能物理与核物理》1995年第6期540-547,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：在与平均场、核内核子－核子弹性散射截面以及输运方程相统一的理论框架内推导了核内核子－核子非弹散射截面的解析表达式．其数值结果能很好地重现自由非弹截面的实验值，所计算的有效非弹截面与Ｄｉｒａｃ－Ｂｒｕｅｃｋｎｅｒ的计算结果相一致．The explicit expressions for in-medium NN→N△ cross section are derived within the relativistic Boltzmann-Uehling-Uhlenbeck approach,which are given simultalleously with the other integrants of transport model such as the mean field, NN elastic scattering cross section as well as the transport equation itself based on the effective Lagrangian.Our results can reproduce the experimental data of free inelastic cross section nicely.The in-medium inelastic cross section is calculated up to twice nuclear matter density and is in agreement with the Dirac-Brueckner calculations.

关 键 词：相对论BUU 平均场 非弹散射截面 核子 

分 类 号：O413.3[理学—理论物理] O572.25[理学—物理]