Effects of pressure on the pulsed magnetic confinement linear hollow cathode discharge

Xia Junming; Sun Hailong; Huo Wenqing; Xu Yuemin; Sun Yueqiang; Bai Weihua; Liu Congliang; Meng Xiangguang

doi:10.11884/HPLPB201527.084005

Volume 27 Issue 08

Sep. 2015

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(08): 084005

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Xia Junming, Sun Hailong, Huo Wenqing, et al. Effects of pressure on the pulsed magnetic confinement linear hollow cathode discharge[J]. High Power Laser and Particle Beams, 2015, 27: 084005. doi: 10.11884/HPLPB201527.084005

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Effects of pressure on the pulsed magnetic confinement linear hollow cathode discharge

doi: 10.11884/HPLPB201527.084005

1.
Center for Space Science and Applied Research,Chinese Academy of Science,Beijing 100190,China;
2.
University of Chinese Academy of Sciences,Beijing 100190,China

Received Date: 2015-03-12
Rev Recd Date: 2015-06-29
Publish Date: 2015-08-11

Abstract

Abstract

Large planar plasma sheets with size of 60 cm60 cm, maximum current of 3 A and duration of 200 s, were obtained in a pulsed linear hollow cathode discharge device under 15 mT magnetic field confinement. The electron density 2-D distribution in the thickness direction and its evolution of plasma sheets with pressures between 90 Pa to 210 Pa were obtained by Langmuir probe using the fast frame function of oscilloscope and the rotating hollow cathode method. The effects of pressure on the time needed to reach the maximum peak density in the thickness direction, the maximum peak density and the full width at half maximum (FWHM) peak density, were investigated. The results show that, as the pressure decreased, the time reaching the maximum peak density in the thickness direction and the FWHM peak density diminished, while the maximum peak density in the thickness direction increased. These results could be utilized to manipulate the parameters of large planar plasma sheets.
- linear hollow cathode,
- plasma sheet,
- electron density distribution,
- fast frame,
- full width at half maximum of the electron density distribution

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