Multichannel coherent correlation of molecules excited and ionized in intense laser fields

2013 Fiscal Year Final Research Report

• Project/Area Number: 23350013
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: ITAKURA Ryuji 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究副主幹 (80334241)
• Co-Investigator(Renkei-kenkyūsha): OTOBE Tomohito 独立行政法人日本原子力研究開発機構, 原子力科学研究部門量子ビーム応用研究センター, 研究職 (60421442)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Keywords: 強レーザー場 / イオン化 / 励起 / 多チャンネル / コヒーレンス

Research Abstract

Photochemical reaction induced by intense laser fields opens a number of channels producing a variety of electronic, vibrational, and rotational states. In this study we aimed to reveal "the ionization dynamics via excitation of neutral molecules" and "the correlation between photoemission and dissociation channels". The following five achievements have been obtained. (1) Time-resolved observation and simulation of rotational wave packet of nitrogen molecules, (2) Identification of ionization and excitation pathways of ethanol in intense laser fields using photoelectron-photoion coincidence imaging, (3) Intensity dependence of photoelectron angular distribution for multichannel ionization of Kr, (4) Development of an experimental method for measuring photoelectron interference, (5) Formulation of ultrafast multichannel photoionization theory and numerical simulation of ionization of Ar.

Research Products

• [Journal Article] Correlation between a photoelectron and a fragment ion in dissociative ionization of ethanol in intense near-infrared laser fields (2013)
  • Author(s): K. Hosaka, A. Yokoyama, K. Yamanouchi, R. Itakura
  • Journal Title: J. Chem. Phys Volume: 138 Pages: 204301-1-9
  • DOI: 10.1063/1.4805085
  • Peer Reviewed
• [Journal Article] Isotope-selective ionization utilizing molecular alignment and non-resonant multiphoton ionization (2012)
  • Author(s): H. Akagi, T. Kasajima, T. Kumada, R. Itakura, A. Yokoyama, H. Hasegawa, Y. Ohshima
  • Journal Title: Appl. Phys. B Volume: 109 Pages: 75-80
  • DOI: 10.1007/s00340-012-5222-3
  • Peer Reviewed
• [Journal Article] Separation of ionization and subsequent electronic excitation for formation of electronically excited ethanol cation in intense laser fields (2011)
  • Author(s): T. Ikuta, K. Hosaka, H. Akagi, A. Yokoyama, K. Yamanouchi, F. Kannari, R. Itakura
  • Journal Title: J. Phys. B Volume: 44 Pages: 191002-1-5
  • DOI: 10.1088/0953-4075/44/19/191002
  • Peer Reviewed
• [Journal Article] Electron and ion coincidence momentum imaging of multichannel dissociative ionization of ethanol in intense laser fields
  • Author(s): R. Itakura, K. Hosaka, A. Yokoyama, T. Ikuta, F. Kannari, and K. Yamanouchi
  • Journal Title: Progress in Ultrafast Intense Laser Science XI, Springer Series in Chemical Physics Volume: (Accepted)
  • DOI: 10.1007/978-3-319-06731-5_2
• [Presentation] Kr の高強度紫外レーザー場イオン化におけるスピン軌道2 準位への分岐 (2014)
  • Author(s): 中野元善, 乙部智仁, 板倉隆二
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学湘南キャンパス
  • Year and Date: 2014-03-27
• [Presentation] 光電子-イオンコア相関波束による超高速多チャンネルイオン化の記述 (2014)
  • Author(s): 板倉隆二, 伏谷瑞穂, 菱川明栄, 佐甲徳栄
  • Organizer: レーザー学会第34回年次大会
  • Place of Presentation: 北九州国際会議場
  • Year and Date: 2014-01-21
• [Presentation] Intense laser induced molecular dynamics accompanied by ionization (2013)
  • Author(s): R. Itakura
  • Organizer: The 15th Asian Chemical Congress
  • Place of Presentation: Singapore
  • Year and Date: 2013-08-22
  • Invited
• [Presentation] Multichannel photoionization dynamics of molecules in intense laser fields (2013)
  • Author(s): R. Itakura
  • Organizer: The 6th Asian Summer School and Symposium on Laser Plasma Acceleration and Radiation, Kansai Photon Science Institute of JAEA
  • Place of Presentation: Kizugawa Kyoto
  • Year and Date: 2013-06-09
  • Invited
• [Presentation] Energy correlation between a photoelectron and a fragment ion in dissociative ionization of ethanol in intense laser fields (2012)
  • Author(s): R. Itakura
  • Organizer: International Symposium on Ultrafast Intense Laser Science
  • Place of Presentation: Jeju, (Korea)
  • Year and Date: 2012-10-25
  • Invited
• [Presentation] Photoelectron-photoion coincidence spectroscopy of ethanol in intense UV and NIR laser fields (2012)
  • Author(s): R. Itakura
  • Organizer: The 5th Asian Workshop on Generation and Application of Coherent XUV and X-ray Radiation (5th AWCXR)
  • Place of Presentation: Kashiwa, (Japan)
  • Year and Date: 2012-06-29
  • Invited
• [Presentation] Ionization of ethanol and subsequent electronic excitation in ethanol cation in intense laser fields (2012)
  • Author(s): R. Itakura
  • Organizer: The Shanghai Tokyo Advanced Research (STAR) Symposium on Ultrafast Intense Laser Science 3
  • Place of Presentation: Odawara, (Japan)
  • Year and Date: 2012-05-17
  • Invited
• [Presentation] 超高速・高強度レーザーによる電子ダイナミクス (2012)
  • Author(s): 板倉隆二
  • Organizer: 分子研研究会 次世代分子科学に向けた複合研究討論会
  • Place of Presentation: 分子研,東岡崎
  • Year and Date: 2012-03-15
  • Invited
• [Book] 「強レーザー場中分子の光電子放出と分子内励起過程」,分担執筆, CSJ カレントレビュー 第18 号 強光子場化学の展開 第II 部,第4 章
  • Author(s): 板倉隆二
  • Publisher: 化学同人(印刷中)
• [Remarks] 出張授業(木津川市立相楽台小学校1年生 2013年6月22日, 木津川市立相楽台小学校児童クラブ 2013年12月24日)(アウトリーチ活動)
• [Remarks] サイエンスキャンプ (高校生対象,実験指導, 日本原子力研究開発機構関西光科学研究所2013年7月31日-8月2日)(アウトリーチ活動)
• [Remarks]
  • URL: http://wwwapr.kansai.jaea.go.jp/aprc/app-ilms.html