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Title
Japanese:DBDとJET装置における大気圧非平衡Arプラズマの連続・線スペクトルに基づいた重み付き解析 
English:Analysis of Atmospheric-pressure Non-equilibrium Ar Plasma Based on Continuum and Line spectra with Weighted Analysis in DBD and JET Devices 
Author
Japanese: 菊地 航行, 榎本 純, 林 珂任, 田口 智也, 根津 篤, 赤塚 洋.  
English: Wataru Kikuchi, Jun Enomoto, Keren Lin, Tomoya Taguchi, Atsushi Nezu, Hiroshi Akatsuka.  
Language Japanese 
Journal/Book name
Japanese:第73回応用物理学会春季学術講演会 講演予稿集 
English:Extended Abstracts of the 73rd JSAP Spring Meeting 2026 
Volume, Number, Page         p. 08-090
Published date Mar. 4, 2026 
Publisher
Japanese:公益社団法人 応用物理学会 
English:Japan Scociety of Applied Physics 
Conference name
Japanese:第73回応用物理学会春季学術講演会 
English:The 73rd JSAP Spring Meeting 2026 
Conference site
Japanese:東京 
English:Tokyo 
Official URL https://pub.confit.atlas.jp/ja/event/jsap2026s/presentation/18a-M_103-1
 
Abstract This study presents a unified diagnostic framework for atmospheric-pressure non-equilibrium argon plasmas, addressing inconsistencies between parameters derived separately from continuum and line spectra. Using a weighted multi-objective optimization with a two-temperature generalized electron energy distribution function (GEEDF), the method simultaneously fits bremsstrahlung continuum and argon line spectra. The optimal weight parameter w is systematically determined via statistical criteria (MSLE, bias, max error) and Pareto analysis (L-curve) to balance spectral contributions. Applied to a closed-channel dielectric barrier discharge (DBD) and a plasma jet (APPJ), the method yielded a consistent bulk electron temperature of Te ~=0.6 eV, correcting the overestimation typical of conventional line-ratio methods, and an electron density of ne =1012-1013 cm-3. This approach effectively constrains the EEDF shape, providing robust diagnostics for non-equilibrium plasma kinetics.

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