On self-sustainment of DC discharges with gridded anode

Chengxun Yuan, Jingfeng Yao, S. I. Eliseev, E. A. Bogdanov, A. A. Kudryavtsev, Zhongxiang Zhou

Результат исследований: Научные публикации в периодических изданияхстатья

1 цитирование (Scopus)

Выдержка

The paper presents results of numerical investigation of a large-volume plasma source based on a DC discharge with gridded anode. Geometry and configuration of the electrodes were chosen so as to ensure the formation of a cathode sheath, which would accelerate electrons up to high energies and inject them into the post-Anode space and create plasma. Simulations were carried out using a hybrid model, and distributions of the main discharge parameters were obtained in a wide range of currents. At low currents, cathode sheath occupies whole interelectrode gap while plasma is formed in the post-Anode space. It is shown that ions moving through the anode grid into the interelectrode gap cause reduction of discharge voltage when compared to the case of classical obstructed discharge with virtually closed anode grid. At higher currents, however, plasma is formed within the interlectrode gap as well, and ions moving from plasma in the post-Anode space become trapped by reversed electric field. This essentially nullifies influence of the post-Anode plasma on discharge properties.

Язык оригиналаанглийский
Номер статьи1433041
ЖурналJournal of Applied Physics
Том122
Номер выпуска14
DOI
СостояниеОпубликовано - 14 окт 2017

Отпечаток

anodes
direct current
sheaths
cathodes
grids
space plasmas
low currents
high current
ions
electrodes
electric fields
causes
electric potential
geometry
configurations
electrons
simulation
energy

Предметные области Scopus

  • Физика и астрономия (все)

Цитировать

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abstract = "The paper presents results of numerical investigation of a large-volume plasma source based on a DC discharge with gridded anode. Geometry and configuration of the electrodes were chosen so as to ensure the formation of a cathode sheath, which would accelerate electrons up to high energies and inject them into the post-Anode space and create plasma. Simulations were carried out using a hybrid model, and distributions of the main discharge parameters were obtained in a wide range of currents. At low currents, cathode sheath occupies whole interelectrode gap while plasma is formed in the post-Anode space. It is shown that ions moving through the anode grid into the interelectrode gap cause reduction of discharge voltage when compared to the case of classical obstructed discharge with virtually closed anode grid. At higher currents, however, plasma is formed within the interlectrode gap as well, and ions moving from plasma in the post-Anode space become trapped by reversed electric field. This essentially nullifies influence of the post-Anode plasma on discharge properties.",
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On self-sustainment of DC discharges with gridded anode. / Yuan, Chengxun; Yao, Jingfeng; Eliseev, S. I.; Bogdanov, E. A.; Kudryavtsev, A. A.; Zhou, Zhongxiang.

В: Journal of Applied Physics, Том 122, № 14, 1433041, 14.10.2017.

Результат исследований: Научные публикации в периодических изданияхстатья

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AU - Zhou, Zhongxiang

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