Innershell ionization dynamics in a high-intensity x-ray laser and cluster interaction

• Project/Area Number: 19684021
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Plasma science
• Research Institution: Hiroshima University
• Principal Investigator: NAMBA Shinichi Hiroshima University, 大学院・工学科, 助教 (00343294)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥23,140,000 (Direct Cost: ¥17,800,000、Indirect Cost: ¥5,340,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2008: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000); Fiscal Year 2007: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
• Keywords: X線レーザー / クラスター / 内殻電離 / 非線形光学現象 / 強結合プラズマ / クラスタープラズマ / 内殻電離過程 / 非線形光学効果

Research Abstract

The interaction of Xe clusters with a soft x-ray laser pulse having a wavelength of 13.9nm and an intensity of up to 2×10^<10>W/cm^2 was investigated. The corresponding laser photon energy was sufficiently high to photoionize Xe 4d inner-shell electrons. It was found that Xe^<3+> ions became the dominant final ionic product. Possible mechanisms responsible for the enhancement of the double Auger transition probability in x-ray laser and cluster interaction are clarified.

Research Products

• [Journal Article] Spatially-resolved spectroscopic study of arcjet helium plasmas expanding through a rectangular shaped converging-diverging nozzle (2009)
  • Author(s): S. Namba, N. Yashio, K. Kozue, K. Nakamura, T. Endo, K. Takiyama, K. Sato
  • Journal Title: Jpn. J. Appl. Phys 48 Pages: 116005-116005
• [Journal Article] Intensity and polarization of laser-induced fluorescence due to forbidden excitation of He atoms immersed in an electric field in plasmas (2009)
  • Author(s): K. Takiyama, S. Furukawa, S. Namba, T. Oda, K. Kawasaki
  • Journal Title: Phys. Rev. E 79 Pages: 26402-26402
  • Peer Reviewed
• [Journal Article] Transition from Thermal to Recombining Plasma in a Free Expanding Arc Jet Plasma Generator (2009)
  • Author(s): S. Namba, K. Nakamura, K. Yashio, S. Furukawa, K. Takiyama, K. Sato
  • Journal Title: J. Plasma and Fusion Res. Series 8 Pages: 1348-1352
  • Peer Reviewed
• [Journal Article] Transition from Thermal to Recombining Plasma in a Free Expanding Arc Jet Plasma Generator (2009)
  • Author(s): S.Namba, 他
  • Journal Title: J.Plasma and Fusion Res.Series 8 Pages: 1348-1352
  • Peer Reviewed
• [Journal Article] Intensity and polarization of laser-induced fluorescence due to forbidden excitation of He atoms immersed in an electric field in plasmas (2009)
  • Author(s): K.Takiyama, S.Furukawa, S.Namba, 他
  • Journal Title: Phys.Rev.E 79 Pages: 26402-26402
  • Peer Reviewed
• [Journal Article] Spatially-resolved spectroscopic study of arcjet helium plasmas expanding through a rectangular-shaped converging-diverging nozzle (2009)
  • Author(s): S.Namba, 他
  • Journal Title: Jpn.J.Appl.Phys 48 Pages: 116005-116005
  • Peer Reviewed
• [Journal Article] Effect of Disalignment due to Electron Collision on Laser-Induced Fluorescence Polarization Spectroscopy for Measuring Electric Field in Plasmas (2008)
  • Author(s): S. Furukawa, S. Namba, K. Takiyama, T. Oda
  • Journal Title: Jpn. J. Appl. Phys 47 Pages: 8570-8575
  • Peer Reviewed
• [Journal Article] 軟x線レーザー照射によるXeクラスターの内殻電離過程 (2008)
  • Author(s): 難波慎一
  • Journal Title: プラズマ核融合学会誌 Vol.84,No.7 Pages: 439-442
  • Peer Reviewed
• [Journal Article] Characterization of out-of-band radiation and plasma parameters in laser-produced Sn plasmas for extreme ultraviolet lithography light sources (2008)
  • Author(s): S. Namba, S. Fujioka, H. Sakaguchi, H. Nishimura, Y. Yasuda, K. Nagai, N. Miyanaga, Y. Izawa, K. Mima, K. Sato, K. Takiyama
  • Journal Title: J. Appl. Phys 104 Pages: 13305-13305
  • Peer Reviewed
• [Journal Article] Absolute evaluation of out-of-band radiation from laser-produced tin plasmas for extreme ultraviolet lithography (2008)
  • Author(s): H. Sakaguchi, S. Fujioka, S. Namba, H. Tanuma, H. Ohashi, S. Suda, M. Shimomura, Y. Nakai, Y. Kimura, Y. Yasuda, H. Nishimura, T. Norimatsu, A. Sunahara, K. Nishihara, N. Miyanaga, Y. Izawa, K. Mima
  • Journal Title: Appl. Phys. Lett 92 Pages: 111503-111503
• [Journal Article] Photoionized Xeon Cluster Plasmas Generated by a Soft X-ray Laser Pulse (2008)
  • Author(s): S. Namba
  • Journal Title: J. Phys. Conf. Series 112 Pages: 42057-42057
  • Peer Reviewed
• [Journal Article] Characterization of out-of-band radiation and plasma parameters in laser-produced Sn plasmas for extreme ultraviolet lithography light sources (2008)
  • Author(s): S. Namba
  • Journal Title: J. Appl. Phys. 104 Pages: 13305-13305
  • Peer Reviewed
• [Journal Article] 軟X線レーザー照射によるXeクラスターの内殻電離過程 (2008)
  • Author(s): 難波愼一
  • Journal Title: プラズマ・核融合学会誌 84 Pages: 439-442
  • Peer Reviewed
• [Journal Article] コヒーレントX線レーザー照射によるXeクラスターの光吸収電離過程 (2008)
  • Author(s): 難波愼一
  • Journal Title: JAEA conf. 2008-07 Pages: 21-24
• [Journal Article] Absolute evaluation of out-of-band radiation from laser produced Sn plasma for extreme ultraviolet lithography application (2008)
  • Author(s): H. Sakaguchi
  • Journal Title: Appl. Phys. Lett. 92 Pages: 111503-111503
  • Peer Reviewed
• [Journal Article] Effect of Disalignment due to Electron Collision on Laser-Induced Fluorescence Polarization Spectroscopy for Measuring Electric Field in Plasmas (2008)
  • Author(s): S. Furukawa
  • Journal Title: Jpn. J. Appl. Phys. 47 Pages: 8570-8575
  • Peer Reviewed
• [Journal Article] Enhancement of Double Auger Decay Probability in Xenon Clusters Irradiated with a Soft-X-ray Laser pulse (2007)
  • Author(s): S. Namba, N. Hasegawa, M. Nishikino, T. Kawachi, M. Kishimoto, K. Sukegawa, M. Tanaka, Y. Ochi, K. Takiyama, K. Nagashima
  • Journal Title: Phys. Rev. Lett 99 Pages: 43004-43004
  • Peer Reviewed
• [Journal Article] Enhancement of Double Auger Decay Probability in Xenon Clusters Irradiated with a Soft X-ray Laser pulse (2007)
  • Author(s): S. Namba
  • Journal Title: Physical Review Letters 99 Pages: 43004-43004
  • Peer Reviewed
• [Presentation] Spatially-resolved spectroscopic study of arcjet helium plasmas expanding through a rectangular-shaped converging-diverging nozzle (2009)
  • Author(s): S.Namba, 他
  • Organizer: アメリカ物理学会プラズマ分科会
  • Place of Presentation: アメリカ・アトランタ
  • Year and Date: 2009-11-04
• [Presentation] Spatially-resolved spectroscopic study of arcjet helium plasmas expanding through a rectangular shaped converging-diverging nozzle (2009)
  • Author(s): S. Namba, et al
  • Organizer: アメリカ物理学会プラズマ分科
  • Place of Presentation: アメリカ・アトランタ
• [Presentation] Transition from thermal to recombining plasma in a free expanding arc jet plasma generator (2008)
  • Author(s): S. Namba, 他
  • Organizer: International Congress on Plasma Physics
  • Place of Presentation: 日本福岡市
• [Presentation] Time-of-Flight Measurements of Ion and Electron from Xenon Clusters Irradiated with a Soft X-ray Laser Pulse (2008)
  • Author(s): S. Namba, 他
  • Organizer: X-Ray Laser 2008
  • Place of Presentation: 英国ベルファスト
• [Presentation] Time-of-Flight Measurements of Ion and Electron from Xenon Clusters Irradiated with a Soft X-ray Laser Pulse (2008)
  • Author(s): S. Namba
  • Organizer: X-Ray Laser 2008
  • Place of Presentation: 英国 ベルファスト
• [Presentation] Transition from thermal to recombining plasma in a free expanding arc jet plasma generator (2008)
  • Author(s): S. Namba
  • Organizer: Transition from thermal to recombining plasma in a free expanding arc jet plasma generator
  • Place of Presentation: 日本福岡市
• [Presentation] Photoionized Xeon Cluster Plasmas Generated by a Soft X-ray Laser Pulse (2007)
  • Author(s): S. Namba, 他
  • Organizer: 5th International Conference on Inertial Fusion Sciences and Applications
  • Place of Presentation: Kobe, Japan
• [Presentation] コヒーレントX線レーザー照射によるキセノンクラスターの光吸収・電離過程の解明 (2007)
  • Author(s): 難波愼一, 他
  • Organizer: 日本原子力研究開発機構第8回光量子科学研究シンポジウム
  • Place of Presentation: 京都府木津川市
• [Presentation] コヒーレントX線レーザー照射によるキセノンクラスターの光吸収・電離過程の解明 (2007)
  • Author(s): 難波愼一
  • Organizer: 原子力研究開発機構 第8回光量子科学研究シンポジウム
  • Place of Presentation: 京都府木津川市