PERIODIC FOCUSING AND PONDEROMOTIVE STABILIZATION OF SHEET ELECTRON-BEAMS

被引：27

作者：

BOOSKE, JH

KUMBASAR, AH

BASTEN, MA

机构：

[1] Electrical and Computer Engineering Department, University of Wisconsin-Madison, Madison

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.71.3979

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Particle simulations compare the behavior ot nonrelativistic sheet electron beams in uniform static and nonuniform time-harmonic magnetic fields. The time-harmonic fields are equivalent to periodically cusped magnetic (PCM) fields. While the sheet beam in a uniform field exhibits diocotron instability, the PCM-focused beam is stabilized by ponderomotive forces, in agreement with recent analytic predictions [J. Appl. Phys. 73, 4140 (1993)]. Mismatched PCM-focused beams exhibit envelope oscillation and initially rapid emittance growth followed by a region of slower increase, in agreement with a recent semianalytic Fokker-Planck model.

引用

页码：3979 / 3982

页数：4

共 15 条

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