高能α粒子在^(40,42,44,48)Ca核上的弹性和非弹性散射  

Elastic and Inelastic Scattering of High-Energy α Particles on ^(40,42,44,48)Ca

作　　者：梁玉娟[1] 柳继锋[2] 

机构地区：[1]河池学院物理系,广西宜州546300 [2]广西师范大学物理与信息工程学院,广西桂林541004

出　　处：《桂林工学院学报》2005年第3期387-391,共5页Journal of Guilin University of Technology

基　　金：国家自然科学基金资助项目(10465001;10147202);广西自然科学基金资助项目(9714005;0339035)

摘　　要：以G lauber理论分析、计算了高能α粒子在40,42,44,48Ca上的弹性和非弹性散射数据.采用Tassie模型处理了单声子能级的集体激发,考虑了弹性道与非弹性道之间的耦合效应.计算结果表明核子-核子弹性散射的位相变化使理论微分截面增大,改进了理论值与实验数据的符合.Elastic and inelastic scattering data of high-energy α particles on ^40,42,44,48Ca are analyzed with the Glauber theory. Collective excitations to one-phonon levels are treated using the Tassie model. The effect of the coupling between the elastic and inelastic channels is discussed. It is shown that a phase variation of the nucleonnucleon elastic scattering amplitude leads to a large increase in the calculated differential cross-section and a substantial improvement.

关 键 词：GLAUBER理论 弹性和非弹性散射 微分散射截面 

分 类 号：O572.2[理学—粒子物理与原子核物理]