understanding of particle acceleration in lightning and thunderclouds via measurement of x rays and nuclear-gamma rays
| Project/Area Number |
19740167
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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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 The Institute of Physical and Chemical Research, 牧島宇宙放射線研究室, 基礎科学特別研究員 (70415230)
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| Research Collaborator |
ENOTO Teruaki 東京大学東京大学, 大学院・理学系研究科・日本学術振興会, 特別研究員(DC1)
KATO Hiroshi 独立行政法人理化学研究所, 牧島宇宙放射線研究室, 先任技師
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | 粒子加速 / 雷 / 雷雲 / ガンマ線 / 放射線観測 / 雷放電 / 衝突系プラズマ / γ線 / 雷活動 |
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| Research Abstract |
High-energy gamma rays, which are possibly associated with electron acceleration in thunderstorm activity, have been observed. Given these observations, we obtained a new idea that such gamma rays reveal mechanisms of electric-field acceleration, which is difficult to be investigated by space measurement. Hence, gamma-ray observations have been performed since 2006, at the coastal area of Japan sea and at a high mountain. By 2010 February, 8 thundercloud gamma-ray events were obtained. These detections confirmed that thunderclouds are indeed natural particle accelerators.
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Report
(4 results)
Research Products
(47 results)
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[Journal Article] Observation of an energetic radiation burst from mountain-top thunderclouds2009
Author(s)
H. Tsuchiya, T. Enoto, T. Torii, K. Nakazawa, T. Yuasa, S. Torii, T. Fukuyama, T. Yamaguchi, H. Kato, M. Okano, M. Takita, K. Makishima
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Journal Title
Phys. Rev. Lett. 102
Pages: 255003-255003
Related Report
Peer Reviewed
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[Journal Article] Detection of High-Energy Gamma Rays from Winter Thunderclouds2007
Author(s)
H. Tsuchiya, T. Enoto, S. Yamada, T. Yuasa, M. Kawaharada, T. Kitaguchi, M. Kokubun, H, Kato, M. Okano, S. Nakamura, K. Makishima
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Journal Title
Phys. Rev. Lett. 99
Pages: 165002-165002
Related Report
Peer Reviewed
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