| Project/Area Number |
25287055
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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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 | Yokohama National University |
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Principal Investigator |
NAKAMURA Shogo 横浜国立大学, 大学院工学研究院, 准教授 (50212098)
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| Co-Investigator(Renkei-kenkyūsha) |
TAWARA Hiroko 高エネルギー加速器研究機構, 放射線科学センター, 准教授 (30188453)
HARUYAMA Tomiyoshi 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (90181031)
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| Research Collaborator |
OHYAMA Shuhei
YOSHIDA Mao
HAMANISHI Ryo
NAGAI Masaya
GOKUDEN Takashi
ONO Hayato
HINO Yota
TAKEDA Hiroki
YAGI Daisuke
NAKAMURA Susumu
KANOU Yoshiki
ADACHI Yuya
MIHARA Satoshi
KASAMI Katsuyu
SASAKI Shinichi
FUJII Keiko
MURAYAMA Ikuko
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
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| Keywords | 液体キセノン / シンチレータ / 赤外発光 |
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| Outline of Final Research Achievements |
Emission spectrum of liquid xenon scintillator was measured in the near-infrared region below 1,700 nm in addition to the vacuum-ultraviolet region. The liquid xenon was excited by gamma-rays from a radioactive source, and the near-infrared scintillation photons coincident with those in the vacuum-ultraviolet region were measured using a photomultiplier and a monochrometer. As a result, the emission reported around 1,300 nm was not observed, but instead significant amount of emission was newly recognized in a wavelength region between 700 and 1,100 nm. The integrated number of photons emitted in the region was about 17±5 % relative to that in the vacuum-ultraviolet region. The near-infrared emission is consistent to be due to some transitions between excited states of atomic xenon.
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