電子遷移誘起脱離研究の先駆者，石川義興博士および太田芳雄博士の業績紹介

• 間瀬 一彦

  高エネルギー加速器研究機構物質構造科学研究所 科学技術振興機構さきがけ

• 南部 英

  ブルックヘブン国立研究所化学部門

書誌事項

タイトル別名

• Pioneers of Study on Desorption Induced by Electronic Transitions; Achievements by Dr. Yoshioki Ishikawa and Dr. Yoshio Ohta
• デンシ センイ ユウキ ダツリ ケンキュウ ノ センクシャ イシカワヨシオキハクシ オヨビ オオタヨシオ ハクシ ノ ギョウセキ ショウカイ

抄録

  Dr. Yoshioki Ishikawa is a pioneer who carried out systematic electron stimulated desorption (ESD) investigations for hydrogen adsorbed on a clean platinum plate (H₂/Pt) under ultrahigh vacuum (UHV) conditions in 1942. (His name is spelled as Yosioki Isikawa in the original papers.) Although his papers are referred in several papers on desorption induced by electronic transitions (DIET), these seem to be not as well-known as famous ones by Menzel, Gomer, and Redhead in 1964. We describe his pioneering work in this article. He developed an UHV apparatus made of glass with a Pt plate and an oxide cathode pumped by a small mercury pump via a liquid air trap. Clear ESD signals were observed for H₂/Pt at excitation energies of 8, 12, 14, 33-46, and 46-51 eV. He assigned the desorbate to atomic hydrogen (H), because it was pumped by a glass wall baked above 350°C. Based on these results and the potential curves of H₂ in the gas phase, he proposed a model for the ESD of H from H₂/Pt; that is, the first step is an electronic transition of adsorbed H₂, and the second is the desorption of H along the repulsive potential surface of the excited state. This was the first introduction of the notion of DIET. He also carried out an ESD study of H₂O/Pt in 1943. We also introduce achievements by Dr. Yoshio Ohta, who was another pioneer in the field of DIET. He measured electron-stimulated ion desorption from an oxidized Ni plate. He found that the threshold excitation energy for ion desorption is 22 eV, and that the kinetic energy of the desorbed ion is 1∼2 eV. To explain these results, he also proposed the concept of DIET.<br>

収録刊行物

• 真空

  真空 49 (10), 610-617, 2006

  一般社団法人 日本真空学会

キーワード

• Electrical and Electronic Engineering
• Surfaces, Coatings and Films
• Condensed Matter Physics

詳細情報

• CRID: 1390001204063862400
• NII論文ID: 10018341312
• NII書誌ID: AN00119871
• DOI: 10.3131/jvsj.49.610
• ISSN: 18809413
• ISSN: 05598516
• NDL書誌ID: 8564225
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8564225
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可