2013 Fiscal Year Final Research Report
Observation of solar neutrons by using the very sensitive cosmic ray detector
| Project/Area Number |
22340054
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nagoya University |
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Principal Investigator |
MATSUBARA Yutaka 名古屋大学, 太陽地球環境研究所, 准教授 (80202323)
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| Co-Investigator(Kenkyū-buntansha) |
ITOW Yoshitaka 名古屋大学, 太陽地球環境研究所, 教授 (50272521)
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| Co-Investigator(Renkei-kenkyūsha) |
SAKO Takashi 名古屋大学, 太陽地球環境研究所, 助教 (90324368)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 太陽中性子 / 高エネルギー粒子加速機構 / 高感度宇宙放射線測定装置 / 銀河宇宙線変動 / メキシコ高山 |
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| Research Abstract |
We use neutrons to study the acceleration mechanism of high energy ions at the solar surface because they are not affected by the interplanetary magnetic field. These neutrons are produced by the interaction between accelerated ions and the solar atmosphere. During this grant, we succeded in operating the very sensitive tracking detector which had been used at the accelerator experiment in USA, on Sierra Negra, 4,600m above sea level, in Mexico. The volume of the detector is 3mx3mx1.7m and much more sensitive than the current solar neutron detectors. Moreover we can get the information on the energy of incident neutrons as well as identifying incident particles. The information on the energy of neutron is essential to understand how efficient particles are accelerated at the solar surface, which has not been understood so far. This new detector is also available for monitoring the intensity of galactic cosmic rays.
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