Development of focusing technique of highly brilliant x-rays by use of laser-produced plasma

• Project/Area Number: 16K05030
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: National Institutes for Quantum and Radiological Science and Technology
• Principal Investigator: Kawachi Tetsuya 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所, 所長(定常) (40343941)
• Co-Investigator(Kenkyū-buntansha): 錦野 将元 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, グループリーダー(定常) (70370450) ; 川染 勇人 香川高等専門学校, 情報工学科, 准教授 (90391325)
• Research Collaborator: HASEGAWA Noboru
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: Ｘ線レーザー / Ｘ線光学 / プラズマ科学 / プラズマ分光学 / 高強度レーザー / レーザー科学 / エックス線光学 / Ｘ線光学素子 / プラズマ物理 / 量子ビーム

Outline of Final Research Achievements

Aiming at the realization of novel X-ray optics such as X-ray focusing lens using the change in the refractive index originated from the steep density gradient in laser-produced plasmas, we demonstrated an X-ray beam splitter transiently generated in laser-produced plasma. A gold or molybdenum sample was irradiated by an optical laser pulse, and thin film with several atomic layers was generated in the front of the expanding plasma. This thin film formed on the surface was probed by SACLA soft x-ray laser, and we found that the thin film worked as X-ray beam splitter. In order to realize an X-ray lens by carbon plasma, we calculated the temporal evolution of highly-charged carbon ions and the electron density using the collisional-radiative model. In addition, X-ray ray trace was performed on the electron density distribution by 2D hydrodynamics simulation to evaluate the performance of the plasma as an x-ray focusing lens.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、高輝度軟Ｘ線源の新しい集光技術の実証に先鞭をつけたものであり、近年の発展が著しいＸ線自由電子レーザーや高次高調波、更にはＸ線管などからのＫ殻特性Ｘ線などの他のＸ線源の集光技術やビームスプリッターとして適用可能である。従って、Ｘ線利用技術を一段と高める基盤技術として、物質科学や材料科学、創薬・医療技術、更には非破壊検査などの多くの産業分野や学術分野における計測・観察技術の高性能化へと繋がると考えられる。

Research Products

• [Journal Article] Development of soft x-ray laser irradiation beamline for ablation and damage study (2019)
  • Author(s): M. Ishino, T.-H. Dinh, N. Hasegawa, K. Sakaue, T. Higashiguchi, S. Ichimaru, M. Hatayama, M. Washio, and M. Nishikino
  • Journal Title: Proceedings of SPIE Volume: 10905 Pages: 46-46
  • DOI: 10.1117/12.2513390
  • Peer Reviewed
• [Journal Article] Analysis of Reflection Signal from EUV Multilayer Mirror for Irradiation-Induced Damage Study (2018)
  • Author(s): Ishino M.、Ichimaru S.、Hatayama M.、Hasegawa N.、Oku S.、Nishikino M.
  • Journal Title: Proceedings of the 15th International Conference on X-Ray Lasers Volume: 202 Pages: 315-319
  • DOI: 10.1007/978-3-319-73025-7_47
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed
• [Journal Article] Study of damage structure formation on aluminum film targets by picosecond soft X-ray laser ablation around threshold region (2018)
  • Author(s): Ishino Masahiko、Inogamov Nail A.、Tamotsu Satoshi、Zhakhovsky Vasily V.、Hasegawa Noboru、Skobelev Igor Yu.、Faenov Anatoly Ya.、Pikuz Tatiana A.、Mikami Katsuhiro、Kawachi Tetsuya、Nishikino Masaharu
  • Journal Title: Applied Physics A Volume: 124 Issue: 9 Pages: 1-8
  • DOI: 10.1007/s00339-018-2072-9
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 軟Ｘ線レーザーによるフェムト秒レーザーアブレーション過程の観察 (2018)
  • Author(s): 長谷川 登, 錦野 将元
  • Journal Title: J. Plasma Fusion Research Volume: 94 Pages: 261-265
  • Peer Reviewed
• [Journal Article] Deep-hole drilling of amorphous silica glass by extreme ultraviolet femtosecond pulses (2018)
  • Author(s): Tatsunori Shibuya, Takashi Takahashi, Kazuyuki Sakaue, T. -H. Dinh, Hiroyuki Hara, Takeshi Higashiguchi, Masahiko Ishino, Yuya Koshiba, Masaharu Nishikino, Hiroshi Ogawa, Masahito Tanaka, Masakazu Washio, Yohei Kobayashi, Ryunosuke Kuroda
  • Journal Title: Applied Physics Letters Volume: 113 Issue: 17 Pages: 171902-171902
  • DOI: 10.1063/1.5046125
  • Peer Reviewed
• [Journal Article] Numerical Calculation of Gain Coefficient for Recombination X-Ray Lasers in a Carbon Cluster Plasma (2018)
  • Author(s): Kawazome H.、Namba S.
  • Journal Title: Proceedings of the 15th International Conference on X-ray Lasers Volume: 202 Pages: 63-68
  • DOI: 10.1007/978-3-319-73025-7_10
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed
• [Journal Article] Progress and Prospects of X-Ray Laser Research in QST (2018)
  • Author(s): Nishikino M.、Hasegawa N.、Ishino M.、Imazono T.、Sasaki A.、Mikami K.、Dinh T. -H.、Suemoto T.、Namba S.、Faenov A. Ya.、Pikuz T. A.、Ichimaru S.、Hatayama M.、Kawachi T.
  • Journal Title: Proceedings of the 15th International Conference on X-Ray Lasers Volume: 202 Pages: 21-24
  • DOI: 10.1007/978-3-319-73025-7_3
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed
• [Journal Article] High-Order Harmonic Generation by Relativistic Plasma Singularities: The Driving Laser Requirements (2018)
  • Author(s): Pirozhkov A. S.、Esirkepov T. Zh.、Pikuz T. A.、Faenov A. Ya.、Ogura K.、Hayashi Y.、Kotaki H.、Ragozin E. N.、Neely D.、Kiriyama H.、Koga J. K.、Fukuda Y.、Sagisaka A.、Nishikino M.、Imazono T.、Hasegawa N.、Kawachi T.、Daido H.、Kato Y.、Bulanov S. V.、Kondo K.、Kando M.
  • Journal Title: Proceedings of the 15th International Conference on X-Ray Lasers Volume: 202 Pages: 85-92
  • DOI: 10.1007/978-3-319-73025-7_13
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] In Situ Characterization of XFEL Beam Intensity Distribution and Focusability by High-Resolution LiF Crystal Detector (2018)
  • Author(s): Pikuz T. A.、Faenov A. Ya.、Matsuoka T.、Albertazzi B.、Ozaki N.、Hartely N.、Muray Ricardo Arturo O.、Yabuuchi T.、Habara H.、Matsuyama S.、Yamauchi K.、Inubushi Y.、Yabashi M.、Nishikino M.、Kawachi T. Pikuz S. A.、Bleiner D.、Tanaka K. A.、Ishikawa T.、Kodama R.等
  • Journal Title: Proceedings of the 15th International Conference on X-ray Lasers Volume: 202 Pages: 109-115
  • DOI: 10.1007/978-3-319-73025-7_17
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ultra-intense X-Ray Radiation Photopumping of Exotic States of Matter by Relativistic Laser Plasma in the Radiation-Dominated Kinetic Regime (RDKR) (2018)
  • Author(s): A. Ya. Faenov, Noboru Hasegawa, Masaharu Nishikino, et al.
  • Journal Title: Proceedings of the 15th International Conference on X-Ray Lasers Volume: 202 Pages: 149-158
  • DOI: 10.1007/978-3-319-73025-7_23
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Formation of x-ray Newton’s rings from nano-scale spallation shells of metals in laser ablation (2017)
  • Author(s): Masaharu Nishikino, Noboru Hasegawa, Takuro Tomita, Yasuo Minami, Takashi Eyama, Naoya Kakimoto, Rui Izutsu, Motoyoshi Baba, Tetsuya Kawachi, and Tohru Suemoto
  • Journal Title: AIP Advances Volume: 7 Issue: 1
  • DOI: 10.1063/1.4975218
  • NAID: 120006877870
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] 高密度プラズマによるX線レーザーの屈折効果 (2016)
  • Author(s): Faenov Anatoly, 石野雅彦、河内哲哉
  • Journal Title: J. Plasma Fusion Res. Volume: 92 Pages: 523-529
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] 「蜃気楼」X線領域の蜃気楼の観察と新しい光学素子への展開 (2016)
  • Author(s): タチアナピクツ、アナトリーファエノフ、河内哲哉
  • Journal Title: 光アライアンス Volume: 27(9) Pages: 1-5
  • Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Surface Ablation by Soft X-ray Laser Pulse for EUV nano-scale fabrication (2018)
  • Author(s): 錦野 将元, 石野 雅彦, タンフン ヂン, 長谷川 登, 坂上 和之, 東口 武史, 鷲尾 方一, 木下 博雄
  • Organizer: SPIE Photonics West /LAMOM XXIV
  • Int'l Joint Research / Invited
• [Presentation] Surface Ablation by Soft X-ray Laser Pulse for EUV nano-scale fabrication (2018)
  • Author(s): 錦野将元
  • Organizer: 2018 Source Workshop, EUV Litho, Inc.
  • Int'l Joint Research / Invited
• [Presentation] Generation of energetic particles & radiation by use of peta-watt lasers in QST-KPSI (2018)
  • Author(s): 河内哲哉
  • Organizer: The 10th Asian Symposium on Intense Laser Science
  • Int'l Joint Research / Invited
• [Presentation] Generation of short wavelength radiation and energetic particles using PW-class lasers (2018)
  • Author(s): 河内哲哉
  • Organizer: The 16th International Conference on X-ray Lasers
  • Int'l Joint Research / Invited
• [Presentation] Study of High Power Lasers at KPSI/QST (2018)
  • Author(s): 河内哲哉
  • Organizer: The 2nd QST International Symposium
  • Int'l Joint Research / Invited
• [Presentation] Generation of energetic chraged particles and radiation by use of peta-watt lasers in QST-KPSI (2018)
  • Author(s): Tetsuya Kawachi
  • Organizer: The 10th Asian Symposium on Intense Laser Science
  • Invited
• [Presentation] Soft X-ray laser ablation of metals and dielectrics (2017)
  • Author(s): A.Y. Faenov, T. Pikuz, M. Ishino, N. A. Inogamov, V. Zhakhovskiy, S. Starikov, I. Skobelev, N. Hasegawa, M. Nishikino, M. Kando, R. Kodama and T. Kawachi
  • Organizer: SPIE Optics & Optoelectrnics 2017
  • Place of Presentation: プラハ、チェコ共和国
  • Year and Date: 2017-04-26
  • Int'l Joint Research / Invited
• [Presentation] Observation of fs-laser spallative ablation by soft x-ray laser probe (2017)
  • Author(s): Masaharu Nishikino, Noboru Hasegawa, Takuro Tomita, Yasuo Minami, Takashi Eyama, Naoya Kakimoto, Rui Izutsu, Motoyoshi Baba, Tetsuya Kawachi, and Tohru Suemoto
  • Organizer: SPIE Photonics west:Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXII
  • Place of Presentation: サンフランシスコ・米国
  • Year and Date: 2017-01-31
  • Int'l Joint Research / Invited
• [Presentation] Recent Progress of Laser-Driven Intense X-ray Sources and the Appilcations (2017)
  • Author(s): Tetsuya Kawachi
  • Organizer: 24th Congress of the International Union of Crystallography
  • Int'l Joint Research / Invited