Spectroscopic characterization and imaging of laser- and unipolar arc-induced plasmas

被引：22

作者：

Aussems, Damien U. B. ^{[1
]}

Nishijima, Daisuke ^{[2
]}

Brandt, Christian ^{[2
]}

Doerner, Russell P. ^{[2
]}

Cardozo, Niek J. Lopes ^{[3
]}

机构：

[1] DIFFER Dutch Inst Fundamental Energy Res, FOM Inst, NL-3430 BE Nieuwegein, Netherlands

[2] Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA

[3] Eindhoven Univ Technol, NL-5612 AZ Eindhoven, Netherlands

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 06期

关键词：

DYNAMICS; DENSITY; GAS;

D O I：

10.1063/1.4892675

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tungsten plasmas induced by unipolar arcs were investigated using optical emission spectroscopy and imaging, and compared with laser-induced tungsten plasmas. The unipolar arcs were initiated in the linear-plasma simulator PISCES-A at UCSD under fusion relevant conditions. The electron temperature and density of the unipolar arc plasmas were in the range 0.5-0.7 eV and 0.7-2.0 x 10(20) m(-3), respectively, and increased with increasing negative bias voltage, but did not correlate with the surface temperature. In comparison, the electron temperature and density of the laser-induced plasmas were in the range 0.6-1.4 eV and 7 x 10(19)-1 x 10(22) m(-3), respectively. (C) 2014 AIP Publishing LLC.

引用

页数：9

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