C^(1+)与Ar碰撞微分截面测量及耦合道分析  

Measurement of Differential Cross Sections and Coupled Channel Analysis in C^(1+) Colliding with He Process

作　　者：鲁彦霞[1] 方玉娉[2] 于涛[1] 宋想[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001 [2]南华大学经济管理学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2010年第3期17-21,26,共6页Journal of University of South China：Science and Technology

基　　金：南华大学博士启动基金资助项目(5-2007-XQD-001)

摘　　要：文章介绍了离子-原子碰撞过程中双微分绝对截面的测量方法,利用符合测量技术测量了0.215~1.44 MeV的一价C离子与Ar原子碰撞的俘获、电离和电子损失截面.由于本能区内入射离子电子损失截面随速度升高而增大,甚至超过俘获道和电离道截面,因此俘获道、电离道、电子损失道的测量结果是严重耦合的.实验的结果不能直接与理论上的单反应道结果比对.本文根据实验结果进行了耦合道分析,并大致给出了影响的趁势,为将来与理论比对提供了方向.The measurement of differential cross section in ion-atom collision process was presented.The capture,ionization and electron-loss cross sections was investigated in C1＋ colliding with He process in the energy range 0.215~1.44 MeV using coincidence technique.The projectile electron-loss cross section increases with velocity increasing,even bigger than capture or ionization ones.They are strongly coupled in the measurement.The experimental results can not be compared directly with theoretical calculation on the single channel.It was analyzed via coupled channels.This analysis provides a right way,by which the theoretical calculation results can be compared with experimental data in the future.

关 键 词：离子-原子碰撞 绝对截面 耦合道 

分 类 号：O562.4[理学—原子与分子物理]