| Project/Area Number |
23654089
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 | Kobe University |
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Principal Investigator |
HARA Toshio 神戸大学, 理学(系)研究科(研究院), 准教授 (50156486)
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| Co-Investigator(Kenkyū-buntansha) |
SUZUKI Atsumu 神戸大学, 大学院・理学研究科, 助教 (20243298)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 液体シンチレータ / 界面活性剤 / 純石けん / 原子炉モニタ / 原子炉ニュートリノ |
|---|
| Research Abstract |
As a reactor neutrino monitor for the safeguards of IAEA (International Atomic Energy Agency), the water-based liquid scintillator with gadolinium(Gd) which is nonflammable and nonvolatile was developed.
The luminescence agent(PPO) was melted in water using a surface-active agent or commercial pure soap, and the light yield was measured using Compton edge electrons by gamma-rays from a cobalt 60. In the liquid scintillator of 70%water+30%surface-active agent(SDS)+30g/L luminescence agent(PPO)+0.2%Gd, the light yield was 9.55+-0.38 [pe] which is 1/30 of an organic matter based liquid scintillator. In the liquid scintillator of 50%water+50% commercial pure soap+30g/L luminescence agent(PPO), the light yield was 6.428+-0.074 [pe]. Aging of the water-based liquid scintillator mentioned above for one year was not appeared.
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