The fundamental process of the plasma - surface interactions in sheathed region by electron spectroscopy from metal surfaces

• Project/Area Number: 24740274
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: Sophia University
• Principal Investigator: HOSHINO Masamitsu 上智大学, 理工学部, 准教授 (40392112)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 電子分光 / プラズマ関連分子 / 金属表面 / 微分散乱断面積 / 散乱断面積 / プラズマ / プラズマ素過程 / 弾性散乱断面積

Outline of Final Research Achievements

To understand the fundamental atomic processes in the fusion plasma, especially in low temperature plasma around the diverter wall, the measurements for an interaction between low energy electron and metal surface has been started. The experiment has been performed by extending to the surface target from an electron spectroscopy of gas phases. In this project, we set the ultra-high vacuum system, checked the operation using the gas targets comparing the previous results, and set the rotational system of the surface target at the interaction region. We also calculated the atomic factor, which is important to understand the scattering from the surface with the collaborator in Spain. Now we just start to measure the angular distributions from Tungsten metal surface by electron impact. It is expected that the comparison of scattering processes between metal surface and single atom would be performed soon.

Research Products

• [Journal Article] Elastic differential cross sections for C4F6 isomers in the 1.5-200 eV energy electron impact: Similarities with six fluorine containing molecules and evidence of F-atom like scattering (2014)
  • Author(s): M. Hoshino, P. Limao-Vieira, K. Anzai, H. Kato, H. Cho, D. Mogi, T. Tanioka, F. Ferreira da Silva, D. Almeida, F. Blanco, G. García, O. Ingolfsson, and H. Tanaka
  • Journal Title: The Jouranal of Chemical Physics Volume: 141 Issue: 12
  • DOI: 10.1063/1.4895903
  • Peer Reviewed / Open Access
• [Journal Article] BF3 Valence and Rydberg States As Probed by Electron Energy Loss Spectroscopy and ab Initio Calculations (2014)
  • Author(s): D. Duflot, M. Hoshino, P. Limao-Vieira, A. Suga, H. Kato, and H. Tanaka
  • Journal Title: The Journal of Physical Chemistry A Volume: 118 Issue: 46 Pages: 10955-10966
  • DOI: 10.1021/jp509375y
  • Peer Reviewed / Open Access
• [Journal Article] Cross sections for elastic scattering of electrons by CF3Cl, CF2Cl2, and CFCl3 (2013)
  • Author(s): M. Hoshino, M. Horie, H. Kato, F. Blanco, G. García, P. Limão-Vieira, J. P. Sullivan, M. J. Brunger, and H. Tanaka
  • Journal Title: The Journal of Chemical Physics Volume: 138 Issue: 21
  • DOI: 10.1063/1.4807610
  • Peer Reviewed
• [Journal Article] Studies of low-lying triplet states in 1,3-C4F6, c-C4F6 and 2-C4F6 by electron energy-loss spectroscopy and ab initio calculations (2013)
  • Author(s): P. Limão-Vieira, D. Duflot, K. Anzai, H. Kato, M. Hoshino, F. Ferreira da Silva, D. Mogi, T. Tanioka, H. Tanaka
  • Journal Title: Chemical Physics Letters Volume: 574 Pages: 32-36
  • DOI: 10.1016/j.cplett.2013.04.059
  • Peer Reviewed
• [Journal Article] Resolution of a significant discrepancy in the electron impact excitation of the 3s[3/2]1 and 3s'[1/2]1 low-lying electronic states in neon (2013)
  • Author(s): M. Hoshino, H. Murai, H. Kato, Y. Itikawa, M.J. Brunger, H. Tanaka
  • Journal Title: Chemical Physics Letters Volume: 585 Pages: 33-36
  • DOI: 10.1016/j.cplett.2013.08.090
  • Peer Reviewed
• [Journal Article] Electron impact excitation of the low-lying 3s[3/2]1 and 3s[1/2]1 levels in neon for incident energies betwee 20 and 300 eV (2013)
  • Author(s): M. Hoshino, H. Murai, H. Kato, M. J. Brunger, Y. Itikawa, and H. Tanaka
  • Journal Title: The Journal of Chemical Physics Volume: 139 Issue: 18
  • DOI: 10.1063/1.4829056
  • Peer Reviewed
• [Journal Article] A comprehensive and comparative study of elastic electron scattering from OCS and CS2 in the energy region from 1.2 to 200 eV (2013)
  • Author(s): H. Murai, Y. Ishijima, T. Mitsumura, Y. Sakamoto, H. Kato, M. Hoshino, F. Blanco, G. Garcia, P. Limao-Vieira, M. J. Brunger, S. J. Buckman, and H. Tanaka
  • Journal Title: The Journal of Chemical Physics Volume: 138 Issue: 5
  • DOI: 10.1063/1.4788666
  • Peer Reviewed
• [Presentation] Elastic differential cross sections for fluorine compound molecules by low energy electron impact (2014)
  • Author(s): M. Hoshino, P. Limao-Vieira, H. Kato, H. Cho, F. Ferreira da Silva, D. Almeida, F. Blanco, G. Garcia, O. Ingolfsson, and H. Tanaka
  • Organizer: 9th International Conference on Atomic and Molecular Data and Their Applications
  • Place of Presentation: Jena, Germany
  • Year and Date: 2014-09-21 – 2014-09-25
  • Invited
• [Presentation] Elastic Scattering from Plasma molecules and Radicals (2014)
  • Author(s): M. Hoshino, P. Limao-Vieira, H. Kato, H. Cho, F. Ferreira da Silva, D. Almeida, F. Blanco, G. Garcia, O. Ingolfsson, and H. Tanaka
  • Organizer: 6th Conference on Elementary Processes in Atomic Systems
  • Place of Presentation: Bratislava, Slovakia
  • Year and Date: 2014-07-09 – 2014-07-12
  • Invited
• [Presentation] 電子衝撃による加熱された水素分子の回転励起断面積 (2013)
  • Author(s): 松井 翠、星野 正光、田中 大
  • Organizer: 原子衝突学会
  • Place of Presentation: 理化学研究所（埼玉県）
• [Presentation] 電子衝撃によるNe, Ar原子の電子励起断面積測定 (2013)
  • Author(s): 望月 有、星野 正光、村井 肇、加藤英俊、田中 大
  • Organizer: 原子衝突学会
  • Place of Presentation: 理化学研究所（埼玉県
• [Presentation] 電子と金属表面相互作用における電子エネルギー損失分光
  • Author(s): 星野正光、田中大
  • Organizer: 日本物理学会
  • Place of Presentation: 徳島大学（徳島県）