冷核物质效应和一种改进的邻近度方法
Cold nuclear matter effects and a modified form of the proximity approach
摘要：
本文在邻近理论框架下系统地研究了冷核物质效应对库仑势垒和47个聚变反应的熔合截面的影响。为了这个目的，我修改了这个形式主义的原始版本（Prox。77)使用一种新的解析形式的通用功能，这是制定的基础上的双折叠模型与密度依赖的三个版本的M3Y型相互作用，即DDM3Y1，CDM3Y3和BDM3Y1。据发现，当近端。77势伴随着每个公式化的通用函数，势垒高度的理论和实验数据之间的协议，也为我们选择的融合系统的融合截面增加。本研究还提供了适当的条件，从理论上探讨NM不可压缩常数$K$的变化对计算结果的影响，引起的Prox。77型号。结果表明，这种潜在的模型再现实验融合数据的准确性提高，通过增加这个常数的强度。还讨论了各种物理效应的邻近方法的理论结果中的作用。
英文摘要：
The influence of the cold nuclear matter effects on the Coulomb barriers and also on the fusion cross sections of 47 fusion reactions are systematically investigated within the framework of the proximity formalism. For this purpose, I modify the original version of this formalism (Prox. 77) using a new analytical form of the universal function which is formulated based on the double-folding model with three density-dependent versions of the M3Y-type interactions, namely DDM3Y1, CDM3Y3 and BDM3Y1. It is found that when the Prox. 77 potential is accompanied by each of the formulated universal functions, the agreement between the theoretical and experimental data of the barrier height and also the fusion cross section increase for our selected fusion systems. The present study also provides appropriate conditions to explore theoretically the variation effects of the NM incompressibility constant $K$ on the calculated results caused by the Prox. 77 model. It is shown that the accuracy of this potential model for reproducing the experimental fusion data enhances by increasing the strength of this constant. A discussion is also presented about the role of various physical effects in the theoretical results of the proximity approach.
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