Soliton generation for neutrino mass spectroscopy
| Project/Area Number |
15K13486
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Okayama University |
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Principal Investigator |
Sasao Noboru 岡山大学, 異分野基礎科学研究所, 特任教授 (10115850)
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHIMURA Motohiko 岡山大学, 異分野基礎科学研究所, 特任教授 (70108447)
MIYAMOTO Yuki 岡山大学, 異分野基礎科学研究所, 講師 (00559586)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | ニュートリノ / 光凝縮体 / ニュートリノ質量 / マクロコヒーラント増幅機構 / 静止光 / 二光子対超放射 |
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| Outline of Final Research Achievements |
The final goal of this research is to measure neutrino’s unknown parameters. To this end, we focus on an atomic relaxation process by emitting a neutrino pair and photon from excited states. We have realized generation of macroscopic coherence between vibrational excited and ground states of para-hydrogen molecules in a counter-propagating excitation configuration, and have succeeded in observing two-photon emission (paired super-radiance emission). We also confirmed the observed signal properties, such as intensity and resonance width are consistent with simulation results. The research has deepened both theoretically and experimentally understandings of macro-coherent amplification principle, which is the key notion of atomic neutrino spectroscopy. We continue research works toward realization of two photon condensate states.
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Report
(4 results)
Research Products
(59 results)
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[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
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Journal Title
J. Phys. Soc. Jpn.
Volume: 85
Issue: 3
Pages: 034301-034301
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Single-atom response of helium atoms to pulses from an EUV free-electron laser: Implications for the subsequent development of superfluorescence2016
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
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Journal Title
PHYSICAL REVIEW A
Volume: 94
Issue: 6
Pages: 063416-063416
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] A streak camera study of superfluorescence at multiple wavelengths from helium atoms excited using free electron laser pulses2015
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
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Journal Title
Journal of Physics B: Atomic, Molecular and Optical Physics
Volume: 48
Issue: 10
Pages: 105002-105002
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Rate amplification of the two photon emission from para-hydrogen toward the neutrino mass measurement2015
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
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Journal Title
Hyperfine Interactions
Volume: 236
Issue: 1-3
Pages: 73-77
DOI
Related Report
Peer Reviewed
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[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
Related Report
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[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
Related Report
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[Presentation] A search for ultra-low energy nuclear isomer state of Thorium-229 using intense X-ray source2015
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
Related Report
Int'l Joint Research
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