Photodetachment of a Homo-Nuclear Linear Tetra-Atomic Negative Molecular Ion  

作　　者：A.Rahman Iftikhar Ahmad A.Afaq H.J.Zhao 

机构地区：[1]Department of Physics,Hazara University,Mansehra,Pakistan [2]Department of Physics,University of Malakand,Chakdara,Pakistan [3]Centre of Excellence in Solid State Physics,University of the Punjab,Quid-e-Azam Campus,Lahore-54590,Pakistan [4]School of Physics and Information Science,Shanxi Normal University,Linfen 041004

出　　处：《Chinese Physics Letters》2012年第4期61-64,共4页中国物理快报（英文版）

摘　　要：The photodetachment of a homo-nuclear linear tetra-atomic negative molecular ion is studied theoretically for an arbitrary laser polarization.An expression for the total cross section is obtained by using an extended version of the two center model,where each center acts as a source of coherent photodetached-electron waves.Strong oscillations on observation plane,placed at a large distance from the ion,are observed.The amplitude of these oscillations is maximum when the laser polarization is parallel to the molecular axis.Furthermore,the amplitude decreases as the angle between the laser polarization and molecular axis increases and consequently vanishes when they are perpendicular to each other.It is also found that if the distance between the adjacent centers is very small or very large,then the ampplitude of oscillations is negligibly small.

关 键 词：STRONG CENTERS polarization 

分 类 号：F42[经济管理—产业经济]