Systematical law of (n, γ) reaction cross sections of even-even nuclei  

作　　者：张小平 黎光武 任中洲 郑强 朱相雷 程建平 

机构地区：[1]Department of Engineering Physics,Tsinghua University [2]Department of Physics,Nanjing University [3]China Institute of Atomic Energy [4]School of Mathematics and Computer Science,Guizhou Normal University

出　　处：《Chinese Physics C》2012年第3期210-215,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10475068, 10535010, 10775068, 10865004, 10905029, 11065005,11105079);973 National Major State Basic Research and Development of China (2007CB815004, 2010CB327803);China Postdoctoral Science Foundation (20100480017)

摘　　要：We have derived a formula for the neutron radiative capture cross section in the framework of a statistical model approach to nuclear reactions. Based on this formula, new systematics are established between the （n, y） reaction cross section and the energy level density of a compound nucleus or a relative neutron excess of an even-even target nucleus for neutron incident energy above the resonance region to MeV. Good agreement with experimental data suggests that this new systematical law is helpful to nalyze the experimental data.We have derived a formula for the neutron radiative capture cross section in the framework of a statistical model approach to nuclear reactions. Based on this formula, new systematics are established between the （n, y） reaction cross section and the energy level density of a compound nucleus or a relative neutron excess of an even-even target nucleus for neutron incident energy above the resonance region to MeV. Good agreement with experimental data suggests that this new systematical law is helpful to nalyze the experimental data.

关 键 词：neutron radiative capture cross section statistical model SYSTEMATICS 

分 类 号：O571.413[理学—粒子物理与原子核物理]