Influence of quantum fluctuations on the stochastic dynamics of the channeling effect of relativistic electrons and positrons

被引：0
|
作者：
Koshcheev, V. P. [1 ]
Morgun, D. A. [1 ]
Panina, T. A. [1 ]
Shtanov, Yu. N. [1 ]
机构：
[1] Surgut State Univ, Surgut 628412, Russia
来源：
JOURNAL OF SURFACE INVESTIGATION-X-RAY SYNCHROTRON AND NEUTRON TECHNIQUES | 2012年 / 6卷 / 01期
关键词：
Multiple Scattering; Neutron Technique; Momentum Operator; Classical Trajectory; Quantum Fluctuation;
D O I：
10.1134/S1027451012020103
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A system of equations describing multiple scattering by crystal nuclei and electrons, and also quantum fluctuations of the coordinate and momentum operators of fast charged particles has been obtained. Quantum corrections to the classical equations of motion have been determined in quasiclassical approximations. A computer simulation of 855-MeV electron and positron motion in the (110) planar channel of a Si crystal has been carried out. The inclusion of quantum fluctuations in the equation of motion affects the dynamics of the electron channeling effect in planar crystal channels considerably; in particular, intense dechanneling (heating) occurs. Intense rechanneling (cooling) occurs in the case of positrons.
引用
收藏
页码：168 / 171
页数：4
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