Study of a thundercloud gamma-ray production model via multiple detectors
| Project/Area Number |
24740183
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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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 | The Institute of Physical and Chemical Research |
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Principal Investigator |
TSUCHIYA Harufumi 独立行政法人理化学研究所, 仁科加速器研究センター, 客員研究員 (70415230)
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| Research Collaborator |
ENOTO Teruaki 独立行政法人理化学研究所, 仁科加速器研究センター, 訪問研究員 (20748123)
UMEMOTO Daigo 東京大学, 大学院理学系研究科, D2
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 粒子加速 / 雷 / 雷雲 / ガンマ線 / ガンマ線測定 / 放射線観測 / ガンマ線観測 / 宇宙線 |
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| Outline of Final Research Achievements |
Gamma rays derived from winter thunderstorms have been observed at the coastal area of the Japan Sea. Gamma-Ray Observations of Winter Thunderclouds (GROWTH) experiment has successfully operated gamma-ray measurement at the Kashiwazaki-Kariwa nuclear power plant, revealing that lightning and thunderclouds can accelerate electrons to 10 MeV or higher. The present study installed a new detector consisting of BGO scintillators, increased the number of gamma-ray events to be detected. In addition, GROWTH for the first time observed 511 keV annihilation lines lasting around 60 s, implying that thunderclouds may produce a large flux of positrons.
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Report
(4 results)
Research Products
(10 results)
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[Presentation] 2012年中における日本海沿岸の冬季雷雲からのガンマ線観測
Author(s)
楳本大悟, 土屋晴文, 榎戸輝揚, 山田真也, 湯浅孝行, 川原田円, 北口貴雄, 中澤知洋,国分紀秀, 岩田憲一, 加藤博,岡野眞治, 玉川徹, 牧島一夫
Organizer
日本物理学会 2013年秋季大会
Place of Presentation
高知大学
Related Report
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[Presentation] Observations of radiation bursts from winter thunderclouds and lightning over the Japan sea coast
Author(s)
D. Umemoto, H. Tsuchiya T. Enoto, S. Yamada, T. Yuasa, M. Kawaharada, T. Kitaguchi, K. Nakazawa, M. Kokubun, K. Iwata, H. Kato, M. Okano, T. Tamagawa, K. Makishima
Organizer
AGU 2013 Fall Meeting
Place of Presentation
サンフランシスコ（USA）
Related Report
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