The results show that the medium correction of isospin dependent nucleon nucleon cross section enhances the sensitivity of the free nucleons emission and multiplicity of intermediate mass fragments on the isospin effects of NN cross section.
利用同位旋相关的量子分子动力学模型研究了中能重离子碰撞过程中 ,同位旋相关的核子碰撞截面的介质修正对于多重碎裂的影响 。
Medium effect of nucleon-nucleon cross section on the isoscaling parameter α;
核子-核子碰撞截面对同位素标度参数α的介质效应
The interaction between nucleon and Ti meson is calculated with a good result according to equivalent field theory,which is helpful for the us age of interaction picture.
利用量子力学中的相互作用绘景,讨论了轻子-核子深度非弹性散射中,把反冲的物理核子系统的哈密顿量写成H0和H1,而H1并非小量时,用等效场论方法计算核子与介子云系统相互作用的方法,得出较好的结果。
Within the framework of the relativistic Dirac Brueckner approach,the paper constructs two one boson exchange(OBE) interactions,one for nucleons only,the other including Δ degrees of freedom,calculates all t matrices and Δ self energy in the (N,N) and ( N,Δ ) systems in the full momentum spin space,and obtains better results.
在相对论D B近似的框架内 ,构造了两个单玻色子交换OBE(OneBosonExchange)势 ,一个只包含核子 ,另一个还包含Δ自由度 ,在完备的动量—自旋空间中计算了 (N ,N)和 (N ,Δ)系统的所有t矩阵和自能 ,得出了较好的结
In the paper, the isospin agular momentun coupling wave functions of nucleons are constructed by twice unitary transformations between group chains in agular momentun coupling space of neutron proton, the CFPs are factorized as products of three isoscalar factors(ISF) and the ISFs are calculated by using the coupling wave functions.
提出在中子－质子角动量耦合空间，通过群链间二次幺正变换，构造核子同位旋－角动量耦合波函数，并由此计算因子化的亲态比系数（ＣＦＰ）。