ELECTRON-TRANSPORT IN THE PRESENCE OF A COULOMB FIELD

被引：76

作者：

BURGDORFER, J ^{[1
]}

GIBBONS, J ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

来源：

PHYSICAL REVIEW A | 1990年 / 42卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.42.1206

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyze the modifications of the transport behavior of electrons in dense media due to the presence of a strong Coulomb field generated by an ion moving initially in close phase-space correlation with the electrons. These modifications play a profound role in convoy electron emission in ion-solid collisions. The transport behavior is studied within the framework of a classical phase-space master equation. The nonseparable master equation is solved numerically using test-particle discretization and Monte Carlo sampling. In the limit of vanishing Coulomb forces the master equation becomes separable and can be reduced to standard one-dimensional kinetic equations for free-electron transport that can be solved exactly. The comparison to free-electron transport is used to gauge both the reliability of test-particle discretization and the significance of Coulomb distortion of the distribution functions. Applications to convoy-electron emission are discussed. © 1990 The American Physical Society.

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页码：1206 / 1221

页数：16

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