Plasma parameters and electron energy distribution functions in a magnetically focused plasma

被引：13

作者：

Samuell, C. M. ^{[1
]}

Blackwell, B. D. ^{[1
]}

Howard, J. ^{[1
]}

Corr, C. S. ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys & Engn, Plasma Res Lab, Canberra, ACT, Australia

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

HELICON PLASMA; TEMPERATURE; PRESSURE; PROBE; ION;

D O I：

10.1063/1.4794841

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Spatially resolved measurements of ion density, electron temperature, floating potential, and the electron energy distribution function (EEDF) are presented for a magnetically focused plasma. The measurements identify a central plasma column displaying Maxwellian EEDFs at an electron temperature of about 5 eV indicating the presence of a significant fraction of electrons in the inelastic energy range (energies above 15 eV). It is observed that the EEDF remains Maxwellian along the axis of the discharge with an increase in density, at constant electron temperature, observed in the region of highest magnetic field strength. Both electron density and temperature decrease at the plasma radial edge. Electron temperature isotherms measured in the downstream region are found to coincide with the magnetic field lines. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794841]

引用

页数：4

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