Precision laser spectroscopy of atoms and ions in superfluid helium

• Project/Area Number: 24350016
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Hosei University (2014-2015); The Institute of Physical and Chemical Research (2012-2013)
• Principal Investigator: MATSUO Yukari 法政大学, 理工学部, 教授 (50231593)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2013: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000); Fiscal Year 2012: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
• Keywords: .レーザー分光 / マトリックス分光 / 超流動ヘリウム / 光ポンピング / レーザー・ラジオ波二重共鳴 / レーザー核分光 / レーザー分光

Outline of Final Research Achievements

Superfluid helium (He II) is an intriguing host matrix for laser spectroscopy of atoms and ions due to its characteristic properties such as transparency in the wide range of wavelength from ultraviolet to radio frequency, low temperature, and small effectiveness to spins. However, precision measurement of guest atoms and ions is usually difficult in liquid media because of interaction with surrounding atoms. In order to apply precision spectroscopy using optical pumping and double resonance method to atoms and ions in He II, we conducted experiments; introduction to He II and optical detection of ions, construction of a pulsed laser for optical pumping of atoms and ions in He II and its application to laser-microwave/radio frequency double resonance spectroscopy, utilization of ion beams produced at an accelerator facility as ion sources. We have achieved higher precision and accuracy of the double resonance measurement for atoms and ions in He II.

Research Products

• [Journal Article] Measurement of the hyperfine splitting of alkali atoms in superfluid helium for laser spectroscopy of atoms with unstable nuclei (2015)
  • Author(s): K. Imamura, T. Furukawa, T. Wakui, X. Yang, Y. Mitusya, T. Fujita, Y. Ebara, M. Hayasaka, Y. Ichikawa, H. Shirai, T. Suzuki, T. Sato, Y. Ohtomo, S. Kojima, K. Asahi, A. Hatakeyama, H. Odashima, T. Kobayashi, H. Ueno, Y. Matsuo
  • Journal Title: JPS Conf. Proc. Volume: 6 Pages: 030115-030115
  • DOI: 10.7566/jpscp.6.030115
  • Peer Reviewed / Open Access
• [Journal Article] Laser-RF double resonance spectroscopy of 84-87Rb isotopes trapped in superfluid helium (2015)
  • Author(s): X.F. Yang, T. Furukawa, T. Wakui, K. Imamura, T. Fujita, Y. Mitsuya, M. Hayasaka, Y. Ichikawa, Y. Ishibashi, H. Shirai, T. Suzuki, Y. Ebara, A. Hatakeyama, M. Wada, T. Sonoda, Y. Ito, T. Kobayashi, S. Nishimura, M. Kurata-Nishimura, Y. Kondo, K. Yoneda, H.Ueno, T. Shinozuka, T. Shimoda, K. Asahi, Y. Matsuo
  • Journal Title: RIKEN Accel. Prog. Rep. Volume: 48 Pages: 8-8
  • Peer Reviewed / Open Access
• [Journal Article] Production of spin polarization of atoms in superfluid helium using a pulsed Ti: sapphire laser (2015)
  • Author(s): M. Hayasaka, T. Furukawa, H. Tomita, T. Takamatsu, K. Imamura, T. Fujita, T. Kobayashi, H. Uematsu, H. Ueno, Y. Matsuo
  • Journal Title: RIKEN Accel. Prog. Rep. Volume: 48 Pages: 223-223
  • Peer Reviewed / Open Access
• [Journal Article] Laser-radio-frequency double-resonance spectroscopy of 84-87Rb isotopes trapped in superfluid helium (2014)
  • Author(s): X. F. Yang, T. Furukawa, T. Wakui, T. Fujita, K. Imamura, 他18名, H. Ueno, T. Shinozuka, T. Shimoda, K. Asahi, Y. Matsuo
  • Journal Title: Phys. Rev. A Volume: 90 Issue: 5 Pages: 052516-052516
  • DOI: 10.1103/physreva.90.052516
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Zeeman resonance spectroscopy of 84-87Rb in superfluid helium (2014)
  • Author(s): X.F. Yang, T. Furukawa, T. Wakui, K. Imamura, T. Fujita, Y. Mitsuya, M. Hayasaka, Y. Ichikawa, Y. Ishibashi, H. Shirai, T. Suzuki, Y. Ebara, A. Hatakeyama, M. Wada, T. Sonoda, Y. Ito, T. Kobayashi, S. Nishimura, M. Kurata-Nishimura, Y. Kondo, K. Yoneda, H.Ueno, T. Shinozuka, T. Shimoda, K. Asahi, Y. Matsuo
  • Journal Title: RIKEN Accel. Prog. Rep. Volume: 47 Pages: 37-37
  • Peer Reviewed
• [Journal Article] Observation of hyperfine resonance of 87Rb in superfluid helium toward laser spectroscopy of atoms with exotic nuclei (2014)
  • Author(s): K. Imamura, T. Furukawa, T. Wakui, X.F. Yang, Y. Mitsuya, T. Fujita, M. Hayasaka, T. Sagayama, S. Kishi, Y. Ichikawa, H. Shirai, T. Suzuki, Y. Ebara, T. Sato, Y. Otomo, S. Kojima, A. Hatakeyama, T. Kobayashi, H. Odashima, K. Asahi, H. Ueno, Y. Matsuo
  • Journal Title: RIKEN Accel. Prog. Rep. Volume: 47 Pages: 240-240
  • Peer Reviewed
• [Journal Article] Development of a laser system towards optical pumping of various elements in OROCHI experiment (2013)
  • Author(s): Y.Yamaguchi, H. Tomita, T. Furukawa, C. Sakamoto, T. Kobayashi, M. Tachikawa, K.D.A. Wendt, Y. Matsuo
  • Journal Title: RIKEN Accel. Prog. Rep. Volume: 46 Pages: 179-179
  • Peer Reviewed
• [Journal Article] Nitrogen removal performance of a hybrid anammox reactor (2011)
  • Author(s): Yongguang Ma, Daisuke Hira, Zhigang Li, Cheng Chen, Kenji Furukawa
  • Journal Title: Bioresource Technology Volume: 102 Issue: 3 Pages: 6650-665
  • DOI: 10.1016/j.physletb.2010.09.059
  • Peer Reviewed
• [Presentation] パルスTi:Sレーザーによる超流動ヘリウム中原子のスピン偏極生成 (2016)
  • Author(s): 早坂美希, 今村慧, 富田英生, 高松峻英, 山口康広, 藤田朋美, 小林徹, 植松晴子, 古川武, 上野秀樹, 松尾由賀利
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-19
• [Presentation] The sixth international conference on Trapped Laser spectroscopy of atoms in superfluid helium for the measurement of nuclear spins and electromagnetic moments of radioisotope atoms (2014)
  • Author(s): T. Fujita, T. Furukawa, K. Imamura, X. F. Yang, A. Hatakeyama, T. Kobayashi, H. Ueno, K. Asahi, T. Shimoda, Y. Matsuo
  • Organizer: The sixth international conference on Trapped Charged Particles and Fundamental Physics (TCP2014)
  • Place of Presentation: かがわ国際会議場（香川県高松市）
  • Year and Date: 2014-12-01 – 2014-12-05
• [Presentation] Effective production of spin polarization of atoms in superfluid helium using pulsed lasers (2014)
  • Author(s): M. Hayasaka, T. Furukawa, H. Tomita, T. Takamatsu, K. Imamura, T. Fujita, T. Kobayashi, H. Uematsu, H. Ueno, Y. Matsuo
  • Organizer: Fourth Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and the Physical Society of Japan
  • Place of Presentation: Hawaii, USA
  • Year and Date: 2014-10-07 – 2014-10-11
• [Presentation] Hyperfine structure measurement of 87Rb atoms injected into superfluid helium as highly energetic ion beam (2014)
  • Author(s): K. Imamura, T. Furukawa, X.F. Yang, T. Fujita, T. Wakui, Y. Mitsuya, M. Hayasaka, Y. Ichikawa, A. Hatakeyama, T. Kobayashi, H. Odashima, H. Ueno, Y. Matsuo
  • Organizer: Fourth Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and the Physical Society of Japan
  • Place of Presentation: Hawaii, USA
  • Year and Date: 2014-10-07 – 2014-10-11
• [Presentation] 内部共振器型SHGを用いた超流動ヘリウム中レーザー分光用光源の開発 (2013)
  • Author(s): 山口康広，富田英生，古川武，坂本知佳，早坂美希，小林徹，立川真樹，K.D.A. Wendt，松尾由賀利
  • Organizer: 第74回応用物理学会秋季学術講演会
  • Place of Presentation: 京田辺市
• [Presentation] Spin polarization of atoms produced by laser excitation and its applications to atomic and nuclear physics (2012)
  • Author(s): Y. Matsuo
  • Organizer: Workshop on Low-Energy Radioactive Isotope Beam (RIB) Production by In-Gas Laser Ionization for Decay Spectroscopy at RIKEN
  • Place of Presentation: Saitama, .Japan(招待講演)
  • Year and Date: 2012-12-11
• [Presentation] A Novel Nuclear Laser Spectroscopy Method using Superfluid Helium for the Measurement of Spins and Moments of Exotic Nuclei (2012)
  • Author(s): T. Furukawa, et. al.
  • Organizer: 16th International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications (EMIS2012)
  • Place of Presentation: Matsue, Shimane, Japan
  • Year and Date: 2012-12-06