Two-dimensional Child-Langmuir law

被引：166

作者：

Luginsland, JW

Lau, YY

Gilgenbach, RM

机构：

[1] Department of Nuclear Engineering and Radiological Sciences, The University of Michigan, Ann Arbor, MI

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.77.4668

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By considering uniform emission of electrons over a finite strip of width W in a planar gap of gap separation D, we extend the classical one-dimensional Child-Langmuir law to two dimensions. The limiting current density in two dimensions J(CL)(2) in units of the classical one-dimensional value J(CL)(1) is found to be a monotonically decreasing function of W/D. More surprisingly, it is virtually independent of the external magnetic field that is imposed along the mean flow. These results were obtained from two different simulation codes, OOPIC and MAGIC.

引用

页码：4668 / 4670

页数：3

共 12 条

[1] THEORETICAL AND EXPERIMENTAL STUDIES OF VIRTUAL CATHODE MICROWAVE DEVICES [J].