Stark spectroscopy at Balmer-αline of atomic hydrogen for measuring sheath electric field in a hydrogen plasma


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Title:	Stark spectroscopy at Balmer-αline of atomic hydrogen for measuring sheath electric field in a hydrogen plasma
Authors:	Nishiyama, Shusuke Browse this author
	Nakano, Haruhisa Browse this author
	Goto, Motoshi Browse this author
	Sasaki, Koichi Browse this author →KAKEN DB
Issue Date:	1-Jul-2017
Publisher:	IOP Publishing
Journal Title:	Journal of Physics D: Applied Physics
Volume:	50
Issue:	23
Start Page:	234003
Publisher DOI:	10.1088/1361-6463/aa6e86
Abstract:	This paper reports a diode laser based system which is applicable to the measurement of electric field in the sheath region of a hydrogen plasma. The electric field is deduced from the Stark spectrum of the Balmer-α line of atomic hydrogen. Saturation spectroscopy with a Doppler-free spectral resolution is adopted to detect the Stark effects of the low energy states. We have demonstrated a detection limit of 10 V cm−1, which is a sufficient sensitivity for investigating the structures of the sheath electric fields in low-temperature plasmas. We have discussed the detection limit, the measurement ambiguity, the spatial resolution, and the limitation of the developed method.
Type:	article (author version)
URI:	http://hdl.handle.net/2115/77155
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 西山修輔

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