HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Estimation of sheath electric field in inductively coupled hydrogen plasma on the basis of Doppler-broadened absorption spectrum of hydrogen Balmer-alpha line

Files in This Item:
Doppler_Electric_Field_rev_clean.pdf455.78 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/85898

Title: Estimation of sheath electric field in inductively coupled hydrogen plasma on the basis of Doppler-broadened absorption spectrum of hydrogen Balmer-alpha line
Authors: Nishiyama, Shusuke Browse this author
Takada, Kosuke Browse this author
Sasaki, Koichi Browse this author →KAKEN DB
Keywords: stark spectroscopy
electric field measurement
laser absorption spectroscopy
hydrogen Balmer-alpha line
Issue Date: 1-Jul-2021
Publisher: IOP Publishing
Journal Title: Japanese Journal of Applied Physics (JJAP)
Volume: 60
Issue: 7
Start Page: 076001
Publisher DOI: 10.35848/1347-4065/ac075c
Abstract: We examined the applicability of the Doppler-broadened absorption spectrum of the hydrogen Balmer-alpha line to the estimation of the sheath electric field in plasma. The Stark splitting of the fine-structure components was calculated by solving the time-independent Schrodinger equation at various electric field strengths, and the theoretical absorption spectrum was obtained by the superposition of the fine-structure components with the same Doppler broadening widths. The spectrum of the Balmer-alpha line of atomic hydrogen, which was measured by standard diode laser absorption spectroscopy, was fitted with the theoretical spectrum. We succeeded in determining the translational temperature of atomic hydrogen, which was obtained from the Doppler broadening width, and the electric field strength by the spectral fitting. We have evaluated that the minimum electric field strength that can be detected by the present method is approximately 350 V cm(-1) when the translational temperature of atomic hydrogen is 400-500 K.
Rights: © [2021] The Japan Society of Applied Physics
Type: article (author version)
URI: http://hdl.handle.net/2115/85898
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: 佐々木 浩一

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 

 - Hokkaido University