The measurement of photoelectron spectra of liquid aerosol

• Project/Area Number: 16K05520
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biological physics/Chemical physics/Soft matter physics
• Research Institution: University of Hyogo
• Principal Investigator: Gejo Tatsuo 兵庫県立大学, 物質理学研究科, 准教授 (20290900)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 液体 / エアロゾル / XAFS / 光電子分光 / 光電子スペクトル / 質量分析 / 放射光 / 軟Ｘ線吸収スペクトル

Outline of Final Research Achievements

Aerosol is a few micron particle and it is well-known that it causes climate change and air pollution. Therefore, the electronic state and its property of aerosol are quite interesting due to its unknown characters, which may apply to new industrial techniques. We have developed several apparatuses to investigate its electronic states by using new type nozzle and the vacuum system we have constructed.

Academic Significance and Societal Importance of the Research Achievements

本研究では、まだよく知られていない液体エアロゾルの特性を調べるため、真空中に噴出する新しいノズルを開発した。また、そこに軟Ｘ線放射光を照射し、そこから生成するイオンや光電子のスペクトルを分光測定した。結果的に、十分なデータはまだ得られていないが、今後、改良を加え、測定したスペクトルと計算の比較により液体エアロゾルの特性評価を行い、最終的にその結果を新しい産業利用へとつなげたい。

Research Products

• [Int'l Joint Research] パリ南大/CEA(フランス)
• [Journal Article] Hard x-ray photoelectron spectroscopy on heavy atoms and heavy element containing molecules using synchrotron radiation up to 35 keV at SPring-8 undulator beamlines (2019)
  • Author(s): M. Oura, T. Gejo, K. Nagaya, Y. Kohmura, K. Tamasaku, L. Journel, M. N. Piancastelli and M. Simon, , 21 (2019) 043015
  • Journal Title: New Journal of Physics Volume: 21 Pages: 043015-043015
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Deep core photoionization of iodine in CH3Iand CF3I molecules: how deep down does the chemical shift reach? (2019)
  • Author(s): Nacer Boudjemia, Kari Jankala, Tatsuo Gejo, Kiyonobu Nagaya, Kenji Tamasaku, Marko Huttula, Maria Novella Piancastelli, Marc Simon and Masaki Oura
  • Journal Title: Physical Chemistry Chemical Physics Volume: 21 Pages: 10-10
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Measurement of Photoabsorption Spectra of Carbonic Acid by Photoelectron-Photoion-Photoion Coincidence Technique (2017)
  • Author(s): Tatsuo Gejo, Asahi Morita, Kenji Honma, and Yusuke Tamenori
  • Journal Title: SPring-8/SACLA Research Report Volume: 5 Issue: 2 Pages: 149-152
  • DOI: 10.18957/rr.5.2.149
  • NAID: 130007969477
  • ISSN: 2187-6886
  • Year and Date: 2017-08-17
  • Peer Reviewed / Open Access
• [Journal Article] Resonant inelastic x-ray scattering and photoemission measurement of O2: Direct evidence for dependence of Rydberg-valence mixing on vibrational states in O 1s → Rydberg states (2017)
  • Author(s): T. Gejo, M. Oura, T. Tokushima, Y. Horikawa, H. Arai, V. Kimberg, and N. Kosugi
  • Journal Title: J. Chem. Phys. Volume: 147 Pages: 44310-44310
  • Peer Reviewed / Open Access
• [Journal Article] X-ray versus Auger emission following Xe 1s photoionization (2017)
  • Author(s): M. N. Piancastelli, K. Jankala, L. Journel, T. Gejo, Y. Kohmura, M. Huttula, M. Simon, and M. Oura
  • Journal Title: Physical Review A Volume: 95 Pages: 061402-061402
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] X線チョッパーを利用した飛行時間型質量分析測定 (2019)
  • Author(s): 坂野卓也、下條竜夫、大沢仁志、大浦正樹
  • Organizer: 放射光学会
• [Presentation] Ｘ線自由電子レーザーとフェムト秒レーザーによる分子軌道変化の直接観察 (2018)
  • Author(s): 下條竜夫
  • Organizer: 原子衝突学会
  • Invited
• [Presentation] Direct observation of dynamics of molecule orbitals by pump and probe technique with X-ray FEL (2018)
  • Author(s): T. Gejo, T. Nishie, K. Tanaka, T. Tanaka, A. Niozu, K. Nagaya, R. Yamamura, O. Takahashi, T. Togashi, M. Oura and A. Verna
  • Organizer: 化学反応討論会
• [Presentation] 放射光とＸ線自由電子レーザー：最先端の実験とはどんな ものなのか？ (2018)
  • Author(s): 下條竜夫
  • Organizer: 第26回ＳＴクラブ
  • Invited
• [Presentation] 硬X線領域での光イオン化質量スペクトルおよび光電子スペクトルの測定 (2018)
  • Author(s): 坂野卓也、下條竜夫
  • Organizer: 兵庫県立大学知の交流シンポジウム2018
• [Presentation] SPring-8における気相分子の硬Ｘ線電子分光実験 (2017)
  • Author(s): 下條竜夫、大浦 正樹、永谷 清信、玉作 賢治
  • Organizer: 原子衝突学会
• [Presentation] SPring-8における気相分子の硬Ｘ線電子分光実験 (2017)
  • Author(s): 下條竜夫、大浦 正樹、永谷 清信、玉作 賢治
  • Organizer: 分子科学討論会