Study on photo-induced dynamics of the positronium negative ion
Project/Area Number |
16K17705
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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Research Institution | National Institute of Advanced Industrial Science and Technology (2017) Tokyo University of Science (2016) |
Principal Investigator |
Michishio Koji 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究員 (10710840)
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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Keywords | ポジトロニウム負イオン / 光脱離 / レーザー分光 / 原子・分子物理 / 陽電子 / 量子ビーム / 粒子線 |
Outline of Final Research Achievements |
In the present study, we performed a measurement of the photodetachment cross-section of the positronium negative ion, a bound state of two electrons and one positron, aimed at revealing its dynamics. The cross-section at a wavelength of 1064 nm was determined by measuring the yield of positronium atoms formed via photodetachment as a function of the laser power. Additionally the electron affinity of the ion was also determined by employing recoil momentum spectroscopy with the light polarization.
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Report
(3 results)
Research Products
(25 results)
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[Journal Article] Research Progress at the Slow Positron Facility in the Institute of Materials Structure Science, KEK2017
Author(s)
T. Hyodo, K. Wada, I. Mochizuki, M. Kimura1, N. Toge, T. Shidara, Y. Fukaya, M. Maekawa, A. Kawasuso, S. Iida, K. Michishio, Y. Nagashima
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Journal Title
J. Phys.: Conf. Ser.
Volume: 791
Pages: 012003-012003
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] Progress in the research at Slow Positron Facility of Institute of Materials Structure Science, KEK2016
Author(s)
T. Hyodo, K. Wada, I. Mochizuki, M. Kimura, A. Ichimiya, N. Toge, T. Shidara, Y. Fukaya, M. Maekawa, A. Kawasuso, K. Michishio, Y. Nagashima
Organizer
14 th International Workshop on Slow Positron Beam Techniques & Applications
Place of Presentation
くにびきメッセ(島根県松江市)
Year and Date
2016-05-22
Related Report
Int'l Joint Research / Invited
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