Electron Temperatures and Electron Densities in Microwave Helium Discharges with Pressures Higher than 0.1 MPa

Sasaki, K.; Soma, S.; Akashi, H.; ElSabbagh, M.; Ikeda, Y.

Electron Temperatures and Electron Densities in Microwave Helium Discharges with Pressures Higher than 0.1 MPa

Sasaki, K.; Soma, S.; Akashi, H. et al.

Contributions to plasma physics, 2015, 55(8), 563-569

Permalink : https://hdl.handle.net/2115/62724

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アクセス権	open access
URI	https://hdl.handle.net/2115/62724
タイトル	Electron Temperatures and Electron Densities in Microwave Helium Discharges with Pressures Higher than 0.1 MPa
著者	Sasaki, K. ; Soma, S. ; Akashi, H. ; ElSabbagh, M. ; Ikeda, Y.
e-Rad_Researcher 50235248 著者名 Sasaki, K.
著者名 Soma, S.
著者名 Akashi, H.
著者名 ElSabbagh, M.
著者名 Ikeda, Y.
言語	英語
キーワード	Electron temperature
	electron density
	multi-atmospheric-pressure plasma
	Thomson scattering
	plasma-assisted combustion
発行日	2015-09
出版者	Wiley-Blackwell
収録物名	Contributions to plasma physics
巻(号)	55(8)
ページ	563-569
抄録	We adopted laser Thomson scattering for measuring the electron density and the electron temperature of microwave plasmas produced in helium at the pressures higher than the atmospheric pressure. The electron density decreased while we observed the increase in the electron temperature with the pressure. These are reasonable results by considering the decrease in the reduced electric field, the dominant loss of electrons via three-body recombination with helium as the third body, and the production of electrons with medium energy via heavy particle collisions at the high gas pressure. The temporal variation of the electron temperature had the rise and the fall time constants of approximately 10 ns. The rapid heating and cooling of the electron temperature are due to the fast energy transfer from electrons to helium because of the high collision frequency in the high-pressure discharge.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is the peer reviewed version of the following article: Contributions to Plasma Physics 55(8) 563-569, which has been published in final form at http://doi.org/10.1002/ctpp.201500033. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
PISSN	0863-1042
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1002/ctpp.201500033