カテゴリ: 論文誌(論文単位)グループ名: 【A】基礎・材料・共通部門発行日: 2022/03/01タイトル(英語): Measurement of Ionization Coefficients in He/H2O (95.4ppm) Mixture著者名: 鈴木 進（千葉工業大学），新井 浩志（千葉工業大学），伊藤 晴雄（千葉工業大学）著者名(英語): Susumu Suzuki (Chiba Institute of Technology), Hiroshi Arai (Chiba Institute of Technology), Haruo Itoh (Chiba Institute of Technology)キーワード: He準安定励起原子，H2O，He/H2O混合ガス，電離係数，Penning電離 He metastable excited atom，H2O，He/H2O mixture，ionization coefficient，Penning ionization要約(英語): Measurements of the first and second ionization coefficients α and γT in He/H2O (95.4 ppm) mixture are carried out using a steady state Townsend method. Observed ionized multiplication currents are analyzed by Nakamura's plot to determine both of the ionization coefficients. The obtained first ionization coefficient in the mixture is large compared with those of helium and water molecule in the range of the reduced electric field E/N≦1131 Td (E/p0≦400 V/cm Torr) affected by Penning ionization between the metastable excited He atoms and H2O molecules.Therefore, it is validated that the Penning ionization is formed in the mixture and the related behaviors of the metastable excited He atoms He(23S1) and He(21S0) are also discussed in this paper.本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.142 No.3 （2022） 特集：放電・プラズマ・パルスパワー研究の最新動向本誌掲載ページ: 80-85 p原稿種別: 論文／日本語電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/142/3/142_80/_article/-char/ja/
