电子束潘宁阱非中性等离子体中电子聚心约束实验  

CONFINEMENT OF ELECTRONSIN NON-NEUTRAL PLASMA WITH DENSE CORE IN AN ELECTRON BEAM PENNING TRAP

作　　者：刘万东[1] 庄革[1] 付成江[1] 白波[1] 迟霁[1] 赵凯[1] 郑坚[1] 俞昌旋[1] 

机构地区：[1]中国科学技术大学近代物理系,合肥230027

出　　处：《核聚变与等离子体物理》2000年第1期25-30,37,共7页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金!( 195 85 0 0 4;19975 0 47);中国科学院基础性研究青年小组基金资助项目

摘　　要：介绍了电子束潘宁阱非中性等离子体实验。利用具有小正则角动量电子束的注入,在装置中形成了有稠密核心的电子等离子体。当潘宁阱中电磁场匹配时,约束电子的散射最强。注入电子束的束流强度超过一定的阈值时,电子聚心状态才能形成。阈值与潘宁阱电场成正比。By meansofinjecting an electron beam with low canonicalangularmomentum in to a Penning trap,electron plasma with a dense core is confined in thedevice. When the electro static field in the trap matches itsmagneticone,more electrons can gain energy by conllision and escape the trap,and are collected with a Faraday cup.A threshold ofinjection electron current for establishing the dense core confinementexists,and is found to be proportionalto the electro static field in the trap.

关 键 词：潘宁阱 稠密聚心电子约束 布城渊密度 

分 类 号：O532.11[理学—等离子体物理] TL631.24[理学—物理]