准直晶体中退道与非相干电磁过程的量子与经典处理方法比较
量子物理
2020-06-24 v1
摘要
以相对于晶轴或晶面很小角度在准直晶体中运动的粒子，主要受到连续 Lindhard 势的引导。该相互作用守恒能量 E、纵向动量 p_parallel、粒子横向能量 E_perp，且关于晶体量子态是弹性的。在足够高的能量下，粒子运动为准经典的。原子或晶体电子位置的时间依赖涨落产生残余势，粒子可在此势上散射。该相互作用不守恒前述各量，且对晶体是非弹性的。我们将其处理与经典二体碰撞模型及唯象量子模型进行比较。经典退道率估计比量子退道率大数十个百分点。讨论了邻近原子关联振动的影响。
引用
@article{arxiv.2003.03818,
title = {Quantum versus classical approach of dechanneling and incoherent electromagnetic processes in aligned crystals},
author = {Xavier Artru},
journal= {arXiv preprint arXiv:2003.03818},
year = {2020}
}
备注
8 pages, 2 figures ; Presented at "RREPS-19" Sept. 2019, Belgorod, Russia. This is the Accepted Manuscript version of an article accepted for publication in Journal of Instrumentation. Neither SISSA Medialab Srl nor IOP Publishing Ltd is responsible for any errors or omissions in this version of the manuscript or any version derived from it