Development of a dense source of highly-charged ions for X-ray quantum optics

• Project/Area Number: 15K04707
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Optical engineering, Photon science
• Research Institution: National Institutes for Quantum and Radiological Science and Technology (2016-2017); Japan Atomic Energy Agency (2015)
• Principal Investigator: HARRIES James 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 放射光科学研究センター, 主幹研究員(定常) (30416383)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 原子・分子 / 量子光学 / 超蛍光 / 超放射 / 多価イオン / 原子分子 / イオン

Outline of Final Research Achievements

The goals of this research are to prepare samples of 'highly-charged ions' (atoms which have lost a large fraction of their electrons) to study various quantum optics effects using short-wavelength coherent lightsources (X-ray free-electron lasers). Further, the development of numerical simulations to support this experimental research was also a goal. The main results include i) development of a gas cell for creating a high density of neutral atoms and ions, ii) observation of Raman scattering and free-induction decay following excitation of neutral helium with a free-electron laser, iii) observation of 'superfluorescence' from hydrogen-like helium (He+), iv) numerical simulations of these processes, and v) further development of an electron-beam ion trap suited to studies at free-electron laser and synchrotron lightsources.

Research Products

• [Int'l Joint Research] Max-Planck Institut fur Kernphysik(ドイツ)
• [Journal Article] Superfluorescence/Superradiance in Helium Following Free-Electron Laser Excitation (2018)
  • Author(s): J R Harries, S.Kuma, H.Iwayama, E.Shigemasa
  • Journal Title: X-Ray Lasers 2016 Proceedings of the 15th International Conference on X-Ray Lasers Volume: - Pages: 105-108
  • DOI: 10.1007/978-3-319-73025-7_16
  • ISBN: 9783319730240, 9783319730257
  • Peer Reviewed
• [Journal Article] Single-atom response of helium atoms to pulses from an EUV free-electron laser: Implications for the subsequent development of superfluorescence (2016)
  • Author(s): James R. Harries, Chiaki Ohae, Susumu Kuma, Kyo Nakajima, Tadashi Togashi, Yuki Miyamoto, Noboru Sasao,Hiroshi Iwayama, Mitsuru Nagasono, Makina Yabashi, and Eiji Shigemasa
  • Journal Title: PHYSICAL REVIEW A Volume: 94 Issue: 6 Pages: 063416-063416
  • DOI: 10.1103/physreva.94.063416
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Simultaneous Measurements of Superradiance at Multiple Wavelength from Helium Excited States: II. Analysis. (2016)
  • Author(s): Ohae, C., Harries, J.R., Iwayama, H., Kawaguchi, K., Kuma, S., Miyamoto, Y., Nagasono, M., Nakajima, K., Nakano, I., Shigemasa, E., Sasao, N., Uetake, S., Wakabayashi, T., Yoshimi, A., Yoshimura, K., Yoshimura, M
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 3 Pages: 034301-034301
  • DOI: 10.7566/jpsj.85.034301
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A streak camera study of superfluorescence at multiple wavelengths from helium atoms excited using free electron laser pulses (2015)
  • Author(s): Harries, J.R., Iwayama, H., Nagasono, M., Togashi, T., Yabashi, M., Kuma, S., Nakajima, K., Miyamoto, Y., Ohae, C., Sasao, N., Shigemasa, E
  • Journal Title: Journal of Physics B: Atomic, Molecular and Optical Physics Volume: 48 Issue: 10 Pages: 105002-105002
  • DOI: 10.1088/0953-4075/48/10/105002
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] EUV-FEL励起由来のヘリウムイオンからの 164 nm 超蛍光の観測 (2018)
  • Author(s): J R Harries, 岩山 洋士, 繁政英治, 久間 晋, 大和田成起, 井上伊知郎, 富樫格, 鈴木紀裕, 東善郎,
  • Organizer: 日本物理学会2018年次大会
• [Presentation] EUV-FELによるVUV超蛍光：実験と数値計算 (2018)
  • Author(s): J R Harries, 岩山洋土 ,藤瀬光, 繁政英治, 鈴木紀裕, 東善郎, 久間晋, 井上伊知郎, 大和田成起
  • Organizer: 第31回日本放射光学会年会・放射光科学合同シンポジウム (つくば)
• [Presentation] EUV-FEL 光とヘリウム原子の相互作用:実験と数値計算 (2017)
  • Author(s): J R Harries, 岩山 洋士, 藤瀬光香, 久間 晋, 大和田成起, 井上伊知郎, 富樫格, 玉作賢治, 繁政英治
  • Organizer: 日本物理学会第72 回年次大会（2017年）
  • Place of Presentation: 大坂大学 豊中キャンパス (大阪府)
  • Year and Date: 2017-03-17
• [Presentation] A new generation of room-temperature electron-beam ion traps with straight-through, on-axis optical access (2017)
  • Author(s): Sven Bernitt, Klaus Blaum, Lisa F Buchauer, Thore M Bucking, Andre Cieluch, Alexander Egl, James R Harries, Sandro Kraemer, Steffen Kuhn, Peter Micke, Rima X Schussler, Christoph Schweiger, Sven Sturm, Robert N Wolf, Jose R. Crespo Lopez-Urrutia
  • Organizer: 30th International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXX)
  • Int'l Joint Research
• [Presentation] Superfluorescence (collective spontaneous emission) observed from helium atoms following excitation using an extreme-ultraviolet free-electron laser (2017)
  • Author(s): J R Harries, H Fujise, I Inoue, H Iwayama, S Kuma, Y Miyamoto, K Nakajima, C Ohae, S Ohwada, N Sasao, E Shigemasa, K Tamasaku, T Togashi, M Yabashi
  • Organizer: 30th International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXX)
  • Int'l Joint Research
• [Presentation] Observation of superfluorescence at a wavelength of 164 nm from ‘highly’ - charged helium ions (2017)
  • Author(s): J R Harries, 東善郎, 岩山洋士, 久間晋, 繁政英治, 鈴木紀裕
  • Organizer: 原子衝突学会第42回年会
• [Presentation] EUV-FEL励起1s4pへリム原子集団における超蛍光・超放射の実験と数値計算 (2016)
  • Author(s): J R Harries, 岩山 洋士, 久間 晋,宮本祐樹、永園 充, 中嶋 享, 大饗千彰, 富樫 格, 繁政英治, 笹尾 登
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学 （石川県、金沢市）
  • Year and Date: 2016-09-13
• [Presentation] Compact 0.86 T room-temperature electron beam ion traps (2016)
  • Author(s): P Micke, S Bernitt, K Blaum, L F. Buchauer, T M. Bucking, A Cieluch, A Egl, J R Harries, D Hollain , S A. King, S Kraemer, S Kuhn , T Leopold, T Pfeifer, T Stohlker, S Sturm, J Ullrich, R Wolf, P O. Schmidt , J-R. Crespo Lppez-Urrutia
  • Organizer: European Conference on Atomic and Molecular Physics
  • Place of Presentation: ドイツ国、フランクフルト市
  • Year and Date: 2016-09-05
  • Int'l Joint Research
• [Presentation] Multiple wavelength superfluorescence/superradiance in helium following free-electron laser excitation (2016)
  • Author(s): J R Harries
  • Organizer: The 15th International Conference on X-ray Lasers
  • Place of Presentation: 奈良春日野国際フォーラム （奈良県奈良市）
  • Year and Date: 2016-05-22
  • Int'l Joint Research / Invited
• [Presentation] A compact 0.74 T room-temperature electron beam ion trap (2016)
  • Author(s): Peter Micke, Sven Bernitt, James Harries, Robert Wolf, Sven Sturm, Alexander Egl, Lisa F. Buchauer, Steffen Kuhn, Thore M. Bucking, Sandro Kraemer, Ioanna Arapoglou, Thomas Stohlker, Klaus Blaum, Thomas Pfeifer, Piet O. Schmidt, and Jose R. Crespo Lopez-Urrutia
  • Organizer: DPG-Fruhjahrstagung
  • Place of Presentation: ハノーバ市 （ドイツ）
  • Year and Date: 2016-02-29
  • Int'l Joint Research
• [Presentation] SCSS 励起由来のヘリウム原子多遷移間における超蛍光・超放射 (2016)
  • Author(s): J R Harries ,大饗千彰 ,岩山洋士 ,繁政英治 ,久間晋 ,中嶋享 ,富樫格 ,宮本祐樹 ,笹尾 登
  • Organizer: 第29回日本放射光学会年会
  • Place of Presentation: 東京大学柏の葉キャンパス （千葉県柏市）
  • Year and Date: 2016-01-09
• [Presentation] Multiple-wavelength superfluorescence in helium following FEL excitation: ultrafast experiments and simulations (2015)
  • Author(s): J R Harries, C Ohae, H Iwayama, K Kawaguchi, S Kuma, Y Miyamoto , M Nagasono , K Nakajima , I Nakano , E Shigemasa , N Sasao , T Togashi , S Uetake , T Wakabayashi, A Yoshimi, K Yoshimura, M Yoshimura
  • Organizer: 原子衝突学会第40回年会
  • Place of Presentation: 首都大学東京 （東京都八王子市）
  • Year and Date: 2015-09-28
  • Invited
• [Presentation] A compact 0.74 T room temperature EBIT (2015)
  • Author(s): P. Micke , S. Bernitt , J. Harries , L. F. Buchauer , T. M. Bucking , S. Kuhn, P. O. Schmidt, and J. R. Crespo Lopez-Urrutia
  • Organizer: 47th Conference of the European Group on Atomic Systems
  • Place of Presentation: リガ市 （ラトビア）
  • Year and Date: 2015-07-14
  • Int'l Joint Research