Abstract

On the basis of the principles of nonequilibrium statistical thermodynamics, the kinetic theory of dechanneling of high-energy particles from planar channels of a crystal has been deduced. The dechanneling rate coefficient is considered from the point of view of the transition of a fast particle from the directional motion mode to the state of chaotic motion. The corresponding equation has been obtained that takes into account both the coherent nature of the diffraction of a particle beam in a regular single crystal and the inelastic scattering of channeled particles by electrons and phonons. An analytical solution of this equation has been obtained on the class of confluent hypergeometric function with the use of which the dechanneling rate constant R_e has been calculated. It has been shown that, up to second-order terms in terms of the interaction potential, the constant R_e is inversely proportional to the relaxation time of the system τ_ph. In calculating τ_ph, the polarization of space by a fast charged particle is not taken into account. The temperature and isotopic dependences of the dechanneling rate have been obtained.

中文翻译：

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从晶体平面通道中去通道高能粒子。弹性和非弹性散射过程

摘要

根据非平衡态统计热力学原理，推导出了高能粒子从晶体平面通道中脱离通道的动力学理论。解通道率系数是从快速粒子从定向运动模式向混沌运动状态转变的角度考虑的。已经获得了相应的方程，该方程考虑了规则单晶中粒子束衍射的相干性质以及电子和声子对通道粒子的非弹性散射。已经获得的类合流超几何函数与使用该方程的解析解，其中退道速率常数的ř _Ë已计算。已经显示的是，高达二阶项中的相互作用潜力方面，该恒定ř _é成反比系统τ的弛豫时间_的pH。在计算 τ _{ph 时}，不考虑快速带电粒子对空间的极化。已经获得了去通道速率的温度和同位素依赖性。