^(18)O+^(148)Nd的准弹性碰撞研究和耦合道分析  

Quasi-Elastic Collision and Coupled Channel Analysis in ^(18)O +^(148)Nd

作　　者：赵葵[1] 李天信[1] 郭继宇[1] 路秀琴[1] 符长波[1] 程业浩[1] 李淑媛 

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《高能物理与核物理》1999年第10期937-945,共9页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!19375067

摘　　要：用Q3D磁谱仪及其焦面探测器系统，在90．72MeV处测量了18O＋148Nd的弹性散射和非弹性散射角分布，利用DWBA和耦合反应道计算程序FRESCO，对实验结果进行了拟合．在对弹性散射分析中，引入极化势的DWBA计算与耦合道计算有类似的结果．讨论了非弹性散射激发过程中的核－库仑激发的相干效应，得出了描述相干强度的近似因子．Angular distributions of the elastic and inelastic scattering of 18O +148Nd at 90.72 MeV were measured by using the Q3D magnetic spectrometer as well as the focal plane detector system. The experimental results were reproduced by DWBA and Coupled Reaction Channel calculation code FRESCO. The polarized potential was introduced in the DWBA calculation and the similar results with the Coupled Channel calculation were obtained. The interference effect of nuclear-Coulomb in the inelastic exciting was discussed and the approximate factor describing the interference intensity were reduced.

关 键 词：准弹性碰撞 角分布 耦合反应道 重离子反应 

分 类 号：O571.426[理学—粒子物理与原子核物理]