中子与α相互作用的两体等效可分离势  

THE EFFECTIVE SEPARABLE POTENTIALS BETWEEN n AND α INTERACTIONS

作　　者：裘志洪 陈炽庆 王炎森[1] 陈建新[1] 黄发泱 

机构地区：[1]复旦大学物理二系,上海200433

出　　处：《高能物理与核物理》1993年第9期845-850,共6页High Energy Physics and Nuclear Physics

基　　金：中国核数据中心资助

摘　　要：本文提供了一种n与α相互作用的等效两体可分离势,并给出了n-α散射的S_(1/2),P_(1/2),P_(3/2)分波相移对入射中子动能的解析表达式。用它计算各种动能的中子微分截面和极化都比较方便,计算结果与20MeV以下的中子散射实验数据作了比较,它们符合得很好。In this paper some effective non-local separable potentials for the interactions between neutron and α are suggested and examined in n-α scattering problem. With those potentials the analytic expressions of the S_(1/2), P_(1/2), P_(3/2) wave phase shifts are obtained. It makes easy to calculate the differential cross sections and polarizations of the scattered neutrons in arbitrary incident energy. Our results are in good agreement with the experiments at neutron energies below 20 MeV.

关 键 词：中子 Α粒子 相互作用 可分离势 

分 类 号：O571.5[理学—粒子物理与原子核物理]