Abstract

We review achievements made in recent years in the field of numerical modeling of ultra-relativistic projectiles propagation in oriented crystals, radiation emission and related phenomena. This topic is highly relevant to the problem of designing novel gamma-ray light sources based on the exposure of oriented crystals to the beams of ultra-relativistic charged particles .The paper focuses on the approaches that allow for advanced computation exploration beyond the continuous potential and the binary collision frameworks. A comprehensive description of the multiscale all-atom relativistic molecular dynamics approach implemented in the MBN Explorer package is given. Several case studies related to modeling of ultra-relativistic projectiles (electrons, positron and pions) channeling and photon emission in oriented straight, bent and periodically bent crystals are presented. In most cases, the input data used in the simulations, such as crystal orientation and thickness, the bending radii, periods and amplitudes, as well as the energies of the projectiles, have been chosen to match the parameters used in the accomplished and the ongoing experiments. Wherever available the results of calculations are compared with the experimental data and/or the data obtained by other numerical means.

Graphic abstract

中文翻译：

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定向晶体中沟道和辐射过程的全原子相对论分子动力学模拟

摘要

我们回顾了近年来在超相对论射弹在定向晶体中传播，辐射发射和相关现象的数值建模领域中取得的成就。本主题与基于定向晶体暴露于超相对论带电粒子束的设计新型伽玛射线光源的问题高度相关。二进制冲突框架。在MBN Explorer中实施的多尺度全原子相对论分子动力学方法的全面描述包裹被给了。提出了一些与超相对论射弹（电子，正电子和介子）的模型化有关的案例研究，这些物质在取向的直晶体，弯曲晶体和周期性弯曲晶体中具有沟道效应和光子发射。在大多数情况下，已选择模拟中使用的输入数据，例如晶体取向和厚度，弯曲半径，周期和振幅以及弹丸的能量，以匹配已完成和进行中的参数实验。尽可能将计算结果与实验数据和/或通过其他数值手段获得的数据进行比较。

图形摘要