Basic studies on neutrino mass spectroscopy with atoms

• Project/Area Number: 15H02093
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Okayama University
• Principal Investigator: Sasao Noboru 岡山大学, 異分野基礎科学研究所, 特任教授 (10115850)
• Co-Investigator(Kenkyū-buntansha): 吉村 浩司 岡山大学, 異分野基礎科学研究所, 教授 (50272464) ; 吉村 太彦 岡山大学, 異分野基礎科学研究所, 教授 (70108447) ; 田中 実 大阪大学, 理学研究科, 助教 (70273729)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥42,510,000 (Direct Cost: ¥32,700,000、Indirect Cost: ¥9,810,000); Fiscal Year 2017: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000); Fiscal Year 2016: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000); Fiscal Year 2015: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
• Keywords: ニュートリノ / マクロコヒーランス / マクロコヒーレンス / ニュートリノ質量 / マヨラナニュートリノ / マクロコヒーラント増幅機構 / 二光子対超放射

Outline of Final Research Achievements

The ultimate goal of the studies is to measure neutrinos’ important parameters yet to be determined. To this end, we focus on a process which emits neutrino pair and photon from excited states of atoms or molecules. Experimentally the most important point is to realize amplification of process rates due to quantum coherence. In this research, we studied experimentally this amplification mechanism using two photon coherent emissions from a vibrationally excited state of hydrogen molecules. As a result, we successfully observed coherently amplified two photon process in a counter-propagating excitation configuration in addition to usual Raman-type excitation configuration. The process rate was found to agree well with the expectation of the theory. Related theoretical studies were also performed: we proposed a method to remove background events, and found a way to improve sensitivity to determine neutrino parameters by imprinting an initial phase to a target system.

Academic Significance and Societal Importance of the Research Achievements

本研究の最終目標は、ニュートリノの未確定で重要な性質(例えば質量絶対値やマヨラナ・ティラック型の識別)を確定することにある。このために原子(あるいは分子)からのニュートリノ対放射過程に注目し、その頻度を増幅するため量子干渉効果を用いる。本研究では、水素分子の振動励起状態からの二光子遷移を観測することにより量子干渉性増幅機構の詳細を研究した。また実際のニュートリノ対観測にむけて、背景事象の低減法や感度向上法などを理論的に研究した。この結果、原子を用いるという新しい方法によるニュートリノ研究の基礎を確立した。

Research Products

• [Journal Article] Coherent two-photon emission from hydrogen molecules excited by counter-propagating laser pulses (2019)
  • Author(s): Hiraki Takahiro、Hara Hideaki、Miyamoto Yuki、Imamura Kei、Masuda Takahiko、Sasao Noboru、Uetake Satoshi、Yoshimi Akihiro、Yoshimura Koji、Yoshimura Motohiko
  • Journal Title: Journal of Physics B: Atomic, Molecular and Optical Physics Volume: 52 Issue: 4 Pages: 045401-045401
  • DOI: 10.1088/1361-6455/aafbd0
  • Peer Reviewed
• [Journal Article] Effects of initial spatial phase in radiative neutrino pair emission (2017)
  • Author(s): Tanaka Minoru、Tsumura Koji、Sasao Noboru、Uetake Satoshi、Yoshimura Motohiko
  • Journal Title: Physical Review D Volume: 96 Issue: 11 Pages: 1-7
  • DOI: 10.1103/physrevd.96.113005
  • Peer Reviewed / Open Access
• [Journal Article] Frequency dependence of coherently amplified two-photon emission from hydrogen molecules (2017)
  • Author(s): Hideaki Hara, Yuki Miyamoto, Takahiro Hiraki, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, and Motohiko Yoshimura
  • Journal Title: PHYSICAL REVIEW A Volume: 96 Issue: 6 Pages: 063827-063827
  • DOI: 10.1103/physreva.96.063827
  • NAID: 120006382538
  • Peer Reviewed
• [Journal Article] Vibrational Two-Photon Emission from Coherently Excited Solid Parahydrogen (2017)
  • Author(s): Miyamoto Yuki、Hara Hideaki、Masuda Takahiko、Sasao Noboru、Uetake Satoshi、Yoshimi Akihiro、Yoshimura Koji、Yoshimura Motohiko
  • Journal Title: The Journal of Physical Chemistry A Volume: 121 Issue: 20 Pages: 3943-3951
  • DOI: 10.1021/acs.jpca.7b02011
  • Peer Reviewed
• [Journal Article] Vibrational excitation of hydrogen molecules by two-photon absorption and third-harmonic generation (2017)
  • Author(s): Miyamoto Yuki、Hara Hideaki、Hiraki Takahiro、Masuda Takahiko、Sasao Noboru、Uetake Satoshi、Yoshimi Akihiro、Yoshimura Koji、Yoshimura Motohiko
  • Journal Title: Journal of Physics B: Atomic, Molecular and Optical Physics Volume: 51 Issue: 1 Pages: 015401-015401
  • DOI: 10.1088/1361-6455/aa9782
  • Peer Reviewed
• [Journal Article] Injection-seeded tunable mid-infrared pulses generated by difference frequency mixing (2017)
  • Author(s): Yuki Miyamoto, Hideaki Hara, Takahiko Masuda, Takahiro Hiraki, Noboru Sasao and Satoshi Uetake
  • Journal Title: Jpn. J. Appl. Phys. Volume: 56 Issue: 3 Pages: 032101-032101
  • DOI: 10.7567/jjap.56.032101
  • NAID: 210000147462
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Toward background-free RENP using a photonic crystal waveguide (2017)
  • Author(s): Minoru Tanaka, Koji Tsumura, Noboru Sasao, and MotohikoYoshimura
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 2017 Issue: 4 Pages: 1-18
  • DOI: 10.1093/ptep/ptx035
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [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] Recent progress of SPAN towards neutrino mass spectroscopy (2016)
  • Author(s): T Masuda, H Hara, Y Miyamoto, N Sasao, M Tanaka, S Uetake, A Yoshimi, K Yoshimura and M Yoshimura
  • Journal Title: Journal of Physics: Conference Series Volume: 718 Pages: 062043-062043
  • DOI: 10.1088/1742-6596/718/6/062043
  • Peer Reviewed / Open Access
• [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] Determination of CP violation parameter using neutrino pair beam (2016)
  • Author(s): M. Yoshimura and N. Sasao
  • Journal Title: Phys. Lett. B Volume: 753 Pages: 465-469
  • DOI: 10.1016/j.physletb.2015.12.040
  • Peer Reviewed / Open Access
• [Journal Article] Basic oscillation measurable in the neutrino pair beam (2015)
  • Author(s): T. Asaka, M.Tanaka and M. Yoshimura
  • Journal Title: arXiv Volume: 2015 Pages: 1-10
  • NAID: 130006245187
  • Open Access
• [Journal Article] Photon and neutrino-pair emission from circulating quantum ions (2015)
  • Author(s): M. Yoshimura and N. Sasao,
  • Journal Title: arXiv Volume: 2015 Pages: 1-18
  • Acknowledgement Compliant
• [Journal Article] Majorana /Dirac distinction and neutrino mass determination using circulating heavy ions (2015)
  • Author(s): M. Yoshimura
  • Journal Title: arXiv Volume: 2015 Pages: 1-11
  • Open Access
• [Journal Article] Neutrino pair and gamma beams from circulating excited ions (2015)
  • Author(s): M.Yoshimura and N.Sasao
  • Journal Title: Physical Review D Volume: 92 Issue: 7
  • DOI: 10.1103/physrevd.92.073015
  • Peer Reviewed
• [Journal Article] Externally triggered coherent two-photon emission from hydrogen molecules (2015)
  • Author(s): Y. Miyamoto, H. Hara, T. Masuda, N. Sasao, M. Tanaka, S. Uetake, A. Yoshimi, K. Yoshimura, M. Yoshimura
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 081C01 Issue: 8 Pages: 081C01-081C01
  • DOI: 10.1093/ptep/ptv103
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Simultaneous measurements of super-radiance at multiple wavelengths from helium excited states: I. Experiment (2015)
  • Author(s): K. Nakajima, J. R. Harries, H. Iwayama, S. Kuma, Y. Miyamoto, M. Nagasono, C. Ohae, T. Togashi, M. Yabashi, E. Shigemasa and N. Sasao
  • Journal Title: Journal of the Physical Society of Japan Volume: 84 Issue: 5 Pages: 054301-054301
  • DOI: 10.7566/jpsj.84.054301
  • NAID: 210000133548
  • Peer Reviewed
• [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
• [Journal Article] Rate amplification of the two photon emission from para-hydrogen toward the neutrino mass measurement (2015)
  • Author(s): Takahiko Masuda, Hideaki Hara, Yuki Miyamoto, Susumu Kuma, Itsuo Nakano, Chiaki Ohae, Noboru Sasao, Minoru Tanaka, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura
  • Journal Title: Hyperfine Interactions Volume: 236 Issue: 1-3 Pages: 73-77
  • DOI: 10.1007/s10751-015-1177-1
  • Peer Reviewed
• [Journal Article] Infrared absorption spectra of SiF4 and its clusters in solid parahydrogen (2015)
  • Author(s): H. Ooe, Y. Miyamoto, S. Kuma, N. Sasao, K. Kawaguchi
  • Journal Title: Chem.Phys.Lett. Volume: 631-632 Pages: 54-58
  • DOI: 10.1016/j.cplett.2015.04.057
  • Peer Reviewed
• [Journal Article] Radiative emission of neutrino pair free of quantum electrodynamic backgrounds (2015)
  • Author(s): M. Yoshimura, N. Sasao, M. Tanaka
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 053B06 Issue: 5 Pages: 53B06-0
  • DOI: 10.1093/ptep/ptv064
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Recent Theoretical Developments on RENP (2019)
  • Author(s): Koji Tsumura
  • Organizer: 11th International Workshop on Fundamental Physics Using Atoms
  • Int'l Joint Research
• [Presentation] Rate amplication of the multi-photon process toward neutrino mass spectroscopy (2019)
  • Author(s): Kei Imamura
  • Organizer: 11th International Workshop on Fundamental Physics Using Atoms
  • Int'l Joint Research
• [Presentation] ニュートリノ質量分光を目指した気体および固体水素振動準位間の位相共役二光子放出実験 (2018)
  • Author(s): 宮本祐樹
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] ニュートリノ質量分光のための対向レーザー励起によるコヒーレント二光子放出実験 (2018)
  • Author(s): 平木貴宏
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] 初期空間位相を用いた原子ニュートリノ過程における誘電体導波路によるQED背景過程の抑制 (2018)
  • Author(s): 田中 実
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] ニュートリノ質量分光のためのパラ水素ガスを用いた対向レーザー励起実験 (2018)
  • Author(s): 平木貴宏
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] ニュートリノ質量分光へ向けたXeガス対向励起実験の開発 (2018)
  • Author(s): 今村慧
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] ニュートリノ質量分光に向けた異種原子内包C60の安定性と電子物性の予測研究 (2018)
  • Author(s): 菅谷優輝
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] SPAN実験(原子を用いたニュートリノ質量分光)のための、多光子放出実験の進展(Progress of the multi-photon emission experiment for the SPAN project) (2017)
  • Author(s): 増田孝彦、原秀明，平木貴宏，宮本祐樹，笹尾登，高江洲義太郎，植竹智，吉見彰洋，吉村浩司，吉村太彦(T. Masuda, H. Hara, T. Hiraki, Y. Miyamoto, N. Sasao, Y. Takaesu, S. Uetake, A. Yoshimi, K. Yoshimura, M. Yoshimura)
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 宮崎大学木花キャンパス（宮崎県宮崎市）
  • Year and Date: 2017-09-21
• [Presentation] 固体パラ水素振動準位を用いたコヒーレント二光子放出の観測(Observation of vibrational coherent two-photon emission in solid parahydrogen) (2017)
  • Author(s): 宮本祐樹，原秀明，増田孝彦，植竹智，笹尾登，吉見彰洋，吉村浩司，吉村太彦 (Yuki Miyamoto, Hideaki Hara, Takahiko Masuda, Satoshi Uetake, Noboru Sasao, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura)
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 宮崎大学木花キャンパス（宮崎県宮崎市）
  • Year and Date: 2017-09-21
• [Presentation] ニュートリノ質量分光のためのパラ水素対向レーザー励起実験の現状 (2017)
  • Author(s): 平木貴宏、原秀明、増田孝彦、宮本祐樹、笹尾登、高江洲義太郎、植竹智、吉村浩司、吉村太彦
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] Recent study on two-photon emission from coherently- excited parahydrogen (2017)
  • Author(s): Takahiro Hiraki for the SPAN collaboration
  • Organizer: 9th International Workshop on Fundamental Physics Using Atoms
  • Place of Presentation: Kyoto University (Kyoto)
  • Year and Date: 2017-01-09
  • Int'l Joint Research
• [Presentation] Study on amplified multi-photon emission processes from macroscopically coherent media (2017)
  • Author(s): Takahiko Masuda
  • Organizer: 9th International Workshop on Fundamental Physics Using Atoms
  • Place of Presentation: Kyoto University (Kyoto)
  • Year and Date: 2017-01-09
  • Int'l Joint Research
• [Presentation] Span Project : Neutrino Mass Spectroscopy with Atoms (2016)
  • Author(s): Noboru Sasao
  • Organizer: International workshop : Current Trends and Future Directions in Relativistic Many Electron Theories
  • Place of Presentation: Tokyo Institute of Technology （Tokyo)
  • Year and Date: 2016-09-26
  • Int'l Joint Research / Invited
• [Presentation] Two-Photon Emission from Coherently Excited Solid Parahydrogen (2016)
  • Author(s): Hideaki Hara, for the SPAN collaboration
  • Organizer: ICAP2016
  • Place of Presentation: Seoul(Korea)
  • Year and Date: 2016-07-24
  • Int'l Joint Research
• [Presentation] SPAN実験(ニュートリノ質量分光実験)のための対向励起実験の進行状況 (2016)
  • Author(s): 増田孝彦，原秀明，宮本祐樹，笹尾登，田中実，植竹智，吉見彰洋，吉村浩司，吉村太彦
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北大学院大学泉キャンパス(宮城県仙台市)
  • Year and Date: 2016-03-21
• [Presentation] ニュートリノ質量分光に向けたXe原子のコヒーレンス生成 (2016)
  • Author(s): 原秀明，岩崎達郎, 植竹智, 吉見彰洋, 吉田光宏, 笹尾登, 増田孝彦, 宮本祐樹, 吉村浩司,吉村太彦
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北大学院大学泉キャンパス（宮城県仙台市）
  • Year and Date: 2016-03-21
• [Presentation] コヒーランス生成 (2015)
  • Author(s): 原秀明
  • Organizer: 研究会「量子イオンビームの切り拓く物理」
  • Place of Presentation: 高エネルギー加速器研究機構（茨城県つくば市)
  • Year and Date: 2015-12-24
• [Presentation] 低エネルギー実証実験 (2015)
  • Author(s): 笹尾登
  • Organizer: 研究会「量子イオンビームの切り拓く物理」
  • Place of Presentation: 高エネルギー加速器研究機構（茨城県つくば市)
  • Year and Date: 2015-12-24
• [Presentation] 新たなコヒーラントニュートリノ対ビームの生成機構とCP非保存位相の測定法 (2015)
  • Author(s): 吉村太彦
  • Organizer: 研究会「量子イオンビームの切り拓く物理」
  • Place of Presentation: 高エネルギー加速器研究機構（茨城県つくば市)
  • Year and Date: 2015-12-24
• [Presentation] Coherent frequency conversion using quantum solid (2015)
  • Author(s): Yuki Miyamoto
  • Organizer: PACIFICHEM2015
  • Place of Presentation: Honolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Rotational and translational dynamics of hydrogen fluoride in solid parahydrogen (2015)
  • Author(s): Susumu Kuma, Yuki Miyamoto, Hiroki Ooe, Noboru Sasao, Kentarou Kawaguchi
  • Organizer: PACIFICHEM2015
  • Place of Presentation: Honolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Coherent Two-Photon Emission Towards Neutrino Mass Spectroscopy using Atoms (2015)
  • Author(s): Hideaki Hara
  • Organizer: FPUA2015
  • Place of Presentation: RIKEN(Wako,Saitama)
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Neutrino physics using quantum coherent ion beam in circular motion (2015)
  • Author(s): Motohiko Yoshimura
  • Organizer: FPUA2015
  • Place of Presentation: RIKEN(Wako,Saitama)
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Detailed study on coherent two-photon emission toward the neutrino mass spectroscopy (2015)
  • Author(s): Yuki Miyamoto
  • Organizer: FPUA2015
  • Place of Presentation: RIKEN(Wako,Saitama)
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Quantum ion beam pilot experiment using Ar13+/Al+ from 14.5GHz Caprice ECRIS (2015)
  • Author(s): Satoshi Uetake
  • Organizer: FPUA2015
  • Place of Presentation: RIKEN(Wako,Saitama)
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Measurement of ultra-low energy nuclear isomer state of Thorium-229 using intense X-ray source (2015)
  • Author(s): Koji Yoshimura
  • Organizer: FPUA2015
  • Place of Presentation: RIKEN(Wako,Saitama)
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Yet another symmetry breaking to be discovered (2015)
  • Author(s): Motohiko Yoshimura
  • Organizer: International symposium on Nambu’s Century: International Symposium on Yoichiro Nambu’s Physics
  • Place of Presentation: Osaka University(Toyonaka,Osaka)
  • Year and Date: 2015-11-16
  • Int'l Joint Research / Invited
• [Presentation] Th229mアイソマー極低エネルギー準位の測定 (2015)
  • Author(s): 吉村浩司
  • Organizer: 2015年大洗研究会
  • Place of Presentation: フクラシア東京ステーション（東京都千代田区）
  • Year and Date: 2015-10-21
• [Presentation] SPAN（原子を用いたニュートリノ質量分光実験）のためのマクロコヒーレント増幅機構の詳細研究IV (2015)
  • Author(s): 宮本祐樹，植竹智，原秀明，増田孝彦，笹尾登，田中実，吉見彰洋，吉村浩司，吉村太彦
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 大阪市立大杉本キャンパス（大阪府大阪市）
  • Year and Date: 2015-09-25
• [Presentation] SPAN（原子を用いたニュートリノ質量分光実験）のためのマクロコヒーレント増幅機構の詳細研究III (2015)
  • Author(s): 笹尾登，植竹智，原秀明，増田孝彦，宮本祐樹，田中実，吉見彰洋，吉村浩司，吉村太彦
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 大阪市立大杉本キャンパス（大阪府大阪市）
  • Year and Date: 2015-09-25
• [Presentation] Recent progress of SPAN towards neutrino mass spectroscopy (2015)
  • Author(s): Takahiko Masuda on behalf of the SPAN collaboration
  • Organizer: 14th International Conference on Topics in Astroparticle and Underground Physics
  • Place of Presentation: Torino, Italy
  • Year and Date: 2015-09-09
  • Int'l Joint Research
• [Presentation] Coherent radiative emission of neutrino pair (RENP) (2015)
  • Author(s): Motohiko Yoshimura
  • Organizer: 17th Lomonosov Conference on Elementary Particle Physics
  • Place of Presentation: Moscow, Russia
  • Year and Date: 2015-08-21
  • Int'l Joint Research / Invited
• [Presentation] Toward neutrino mass spectroscopy with atoms: experimental status (2015)
  • Author(s): Noboru Sasao
  • Organizer: 17th Lomonosov Conference on Elementary Particle Physics
  • Place of Presentation: Moscow, Russia
  • Year and Date: 2015-08-21
  • Int'l Joint Research / Invited
• [Presentation] Neutrino mass spectroscopy with macro-coherently excited atoms : Detecting cosmic neutrino background by atomic de-excitation. I: Theoretical aspects. II: Experimental results (2015)
  • Author(s): Motohiko Yoshimura and Noboru Sasao
  • Organizer: Ecole Internationale Daniel Chalonge 19th Paris Cosmology Colloquium 2015
  • Place of Presentation: Paris, France
  • Year and Date: 2015-07-22
  • Int'l Joint Research / Invited
• [Presentation] A search for ultra-low energy nuclear isomer state of Thorium-229 using intense X-ray source (2015)
  • Author(s): K.Yoshimura, H.Hara, T.Iwasaki, Y.Kobayashi, S.Kitao, K.Konashi, R.Masuda, T.Masuda, Y.Miyamoto, I.Nakano, N.Sasao, M.Seto, S.Stellmer, S.Uetake, A.Yamaguchi, Y.Yoda, A.Yoshimi, M.Yoshimura, M.Watanabe
  • Organizer: The 22th International Conference on Laser Spectroscopy(ICOLS)
  • Place of Presentation: Sentosa Island, Singapore
  • Year and Date: 2015-06-30
  • Int'l Joint Research
• [Presentation] Coherent Two-Photon Emission from Hydrogen Molecules (2015)
  • Author(s): Hideaki Hara, for the SPAN collaboration
  • Organizer: The 22th International Conference on Laser Spectroscopy(ICOLS)
  • Place of Presentation: Sentosa Island, Singapore
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Remarks] 岡山大学異分野基礎科学研究所 量子宇宙研究コアホームページ
  • URL: http://www.xqw.okayama-u.ac.jp/
• [Remarks] http://www.xqw.okayama-u.ac.jp/