正交投影对三重微分散射截面(TDCS)的影响  

The Effect of Orthogonal Projections on the Triply Differential Cross Section

作　　者：祖新慧[1] 潘哲峰[1] 张程华[2] 

机构地区：[1]沈阳航空工业学院理学系,辽宁沈阳110034 [2]辽宁大学物理学院,辽宁沈阳110036

出　　处：《辽宁大学学报（自然科学版）》2008年第2期105-107,共3页Journal of Liaoning University：Natural Sciences Edition

摘　　要：从跃迁矩阵元的后滞形式出发,计算了在入射能量为150 eV,敲出能量分别为3 eV和5 eV,散射角1θ=16°的TDCS.取末态波函数为库仑波函数和平面波函数的乘积;初态波函数为平面波、类氢离子基态波和库仑因子C12的乘积;通过正交投影使跃迁矩阵元的后滞形式第一项为零,另外还考虑了屏蔽效应,这样所得出的理论计算结果与实验数值符合的更好了.In our model＇s starting from the post form of two - potential formulae of transitions matrix element on the energy shell, we computed the TDCS for electorn impact ionization of atomic hydrogen for asymmetric kinematics in the case of incident energy of 150 eV, ejected energy of 3 eV and 5 eV and the scattering angle for the faser electron of 1θ=16°. The final state wave function is the product of one coulomb wave and one plane wave, and the initial state wave thnction is the proauct oz one plane wave, ground state wave and C12 which is the Coulomb factor. Orthogonal projections makes the first term of the transition matrix element being zero and the dynamic screening be taken into account, the results calculated are quantity agreement with some experiments.

关 键 词：三重微分散射截面 BINARY峰 RECOIL峰 正交投影 有效电荷 

分 类 号：O56[理学—原子与分子物理]