2013 Fiscal Year Final Research Report
Development of Measurement Technique of Fast Neutron Flux with Nuclear Emulsion in the Underground Laboratory
| Project/Area Number |
23740185
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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 | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 高速中性子 / 原子核乾板 / 感度制御 |
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| Research Abstract |
Nuclear emulsion is high sensitive photographic film used for detection of three-dimensional trajectory of charged particles. The principle of the measurement of fast neutron with nuclear emulsion is the detection of proton recoiled by neutron. However, electron tracks scattered by gamma rays are also recorded in the nuclear emulsion. These electron tracks are major background for fast neutron measurement. We developed new nuclear emulsion by adding a tiny amount of the rhodium into the silver bromide crystals in order to control the sensitivity and achieved high performance of electron background rejection. We can use this new emulsion to measure fast neutron flux in the underground experiment.
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Research Products
(20 results)
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[Journal Article] Development of Fusion Neutron Pinhole Imaging using Nuclear Emulsions for Energetic Ion Diagnostics2013
Author(s)
H. Tomita, F. Yamashita, Y. Yamamoto, H. Minato, K. Morishima, Y. Sakai, M. Isobe, K. Ogawa, T. Nakano, M. Nakamura, J. Kawarabayashi, T. Iguchi, K. Ochiai and M. Cheon
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Journal Title
Plasma Fusion Res
Volume: Volume 8
Pages: 2406095
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[Journal Article] Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique2013
Author(s)
K. Ishihara, K. Takagi, H. Minato, J. Kawarabayashi, H. Tomita, S. Maeda, T. Naka, K. Morishima, T. Nakano, M. Nakamura, T. Iguchi
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Journal Title
Radiation Measurements
Volume: 55
Pages: 79-82
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