Cyclotron mode frequency shifts in multi-species ion plasmas

被引：5
|
作者：
Affolter, M. [1 ]
Anderegg, F. [1 ]
Dubin, D. H. E. [1 ]
Driscoll, C. F. [1 ]
机构：
[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
来源：
PHYSICS LETTERS A | 2014年 / 378卷 / 32-33期
基金：
美国国家科学基金会;
关键词：
Plasma; Nonneutral; Cyclotron mode; Mass spectrometry; Space charge; Centrifugal separation; RESONANCE MASS-SPECTROMETRY; NONNEUTRAL PLASMA; CHARGE;
D O I：
10.1016/j.physleta.2014.06.015
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In trapped plasmas, electric fields and collective effects shift the cyclotron mode frequencies away from the "bare" cyclotron frequency for each species s. Here, these shifts are measured on a set of cyclotron modes (m = 0, 1, and 2) with cos(m theta) azimuthal dependence in near rigid-rotor multi-species ion plasmas. We observe that these frequency shifts are dependent on the plasma density, through the E x B rotation frequency f(E), and on the "local" charge concentration delta(s) of species s, in close agreement with theory. (C) 2014 Elsevier E.V. All rights reserved.
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页码：2406 / 2409
页数：4
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