Quasi-neutrality breaking in a rotating plasma

Masayoshi Y. Tanaka; Shinji Yoshimura

doi:10.1109/TPS.2008.922449

Quasi-neutrality breaking in a rotating plasma

Masayoshi Y. Tanaka, Shinji Yoshimura

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

In this paper, spontaneous quasi-neutrality breaking has been observed in a rotating plasma (plasma hole). Two-dimensional potential measurement revealed that a very high potential eφ/T_e ∼ 5 is localized in the region of 1/5 of the plasma radius. Using the Poisson's equation and fast Fourier transform, we have evaluated the 2-D distribution of the degree of nonneutrality δn/n, where δn = n_i - n_e. It is found that δn/n is three orders of magnitude higher in the hole center than in the peripheral region and that the scale of quasi-neutrality breaking extends over 10³ times the Debye length.

Original language	English
Pages (from-to)	1224-1225
Number of pages	2
Journal	IEEE Transactions on Plasma Science
Volume	36
Issue number	4 PART 1
DOIs	https://doi.org/10.1109/TPS.2008.922449
Publication status	Published - Aug 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Condensed Matter Physics

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10.1109/TPS.2008.922449

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title = "Quasi-neutrality breaking in a rotating plasma",

abstract = "In this paper, spontaneous quasi-neutrality breaking has been observed in a rotating plasma (plasma hole). Two-dimensional potential measurement revealed that a very high potential eφ/Te ∼ 5 is localized in the region of 1/5 of the plasma radius. Using the Poisson's equation and fast Fourier transform, we have evaluated the 2-D distribution of the degree of nonneutrality δn/n, where δn = ni - ne. It is found that δn/n is three orders of magnitude higher in the hole center than in the peripheral region and that the scale of quasi-neutrality breaking extends over 103 times the Debye length.",

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AB - In this paper, spontaneous quasi-neutrality breaking has been observed in a rotating plasma (plasma hole). Two-dimensional potential measurement revealed that a very high potential eφ/Te ∼ 5 is localized in the region of 1/5 of the plasma radius. Using the Poisson's equation and fast Fourier transform, we have evaluated the 2-D distribution of the degree of nonneutrality δn/n, where δn = ni - ne. It is found that δn/n is three orders of magnitude higher in the hole center than in the peripheral region and that the scale of quasi-neutrality breaking extends over 103 times the Debye length.

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Quasi-neutrality breaking in a rotating plasma

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