用STO波函数研究正电子与氪、氙、氡的弹性散射  

Investigation of elastic scattering of positrons in atmosphere of Kr, Xe, Rn with STO wave function

作　　者：孙志红[1] 戴彤[1] 

机构地区：[1]甘肃工业大学理学院,甘肃兰州730050

出　　处：《甘肃工业大学学报》2003年第1期143-145,共3页Journal of Gansu University of Technology

摘　　要：用模型势方法 ,采用STO波函数 ,计算了正电子与Kr,Xe ,Rn的相互作用势 ,进而用分波法系统计算了低能正电子与氪、氙、氡原子弹性散射角在 2 0°～ 16 0°的微分截面 ,结果与现有的理论计算及实验数值吻合 。Using the method of model potentials and STO wave function, the interactive potentials between positrons and Kr, Xe, Rn are evaluated and, further, the differential cross section with an elastic scattering angle of low energy positrons at 20～160 deg with the atoms of krypton, xenon, and radon is also evaluated systematically with partial wave method, resulting in a quite agreement with available theoretical calculation and experimental data. The distribution pattern of scattering angles of low energy positrons away from the atoms of rare gases is summed up, also.

关 键 词：正电子 氪 氙 氡 弹性散射 模型势 STO波函数 微分截面 相互作用势 碰撞 原子 

分 类 号：O562.5[理学—原子与分子物理]