激光场中量子散射三重微分散射截面的研究  

Study on triple differential cross section of quantum-scattering in laser field

作　　者：冯露[1] 张程华[1] 雷琦晖 孙文儒[2] 

机构地区：[1]辽宁大学物理系,沈阳110036 [2]中国科学院金属研究所,沈阳110016

出　　处：《原子与分子物理学报》2015年第4期621-624,共4页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10874062)

摘　　要：在量子散射框架下,对真实激光场引进多光子相互作用准静态过程模型,考虑束缚-自由跃迁中电磁场的规范一致性及电子与激光场长程相互作用的极限,研究激光场对量子散射过程中三重微分散射截面的影响.多数共面非对称情况下激光场对三重微分散射截面有提升作用,此外靶原子处于激发态时binary峰出现分裂,激光场对三重微分散射截面也有放大作用.Multiple - photon interaction model of quasi - static process has been introduced to real laser field, in the framework of quantum scattering. Based on the specification conformity of bound - free transitions in electro- magnetic field and the limits of long - range interaction between electron and laser field, the effects of triple - differential cross section in laser field during quantum scattering process have been investigated. The results show that laser field has enhanced triple differential cross section in most coplanar asymmetric conditions. Moreover, binary peaks were split when the target atom in the excited state, laser field also has a differential cross section. magnifying effect on triple

关 键 词：(e 2e)反应 三重微分散射截面 准静态过程模型 跃迁矩阵元 

分 类 号：O561.5[理学—原子与分子物理]