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Title:
SCINTILLATOR FOR NEUTRONS AND NEUTRON DETECTOR
Document Type and Number:
WIPO Patent Application WO/2011/136224
Kind Code:
A1
Abstract:
Provided is a scintillator for neutrons that has excellent neutron detection efficiency and n/γ discrimination performance, and also provided is a neutron detector that uses the neutron scintillator. The scintillator for neutrons is formed from a eutectic body in which laminar lithium fluoride crystals and laminar calcium fluoride crystals are alternately layered and the thickness of the laminar lithium fluoride crystal layers in the eutectic body is 0.1 to 5 µm, or the scintillator for neutrons is formed from a eutectic body in which laminar lithium fluoride crystals and laminar calcium fluoride crystals are layered alternately and the laminar calcium fluoride crystal layers in the eutectic body are linearly continuous in at least one direction. Furthermore, the basic structure of the neutron detector is formed from the neutron scintillator and a light detector.

Inventors:
FUKUDA, Kentaro (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
福田 健太郎 (〒48 山口県周南市御影町1番1号 株式会社トクヤマ内 Yamaguchi, 〒7458648, JP)
ISHIZU, Sumito (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
石津 澄人 (〒48 山口県周南市御影町1番1号 株式会社トクヤマ内 Yamaguchi, 〒7458648, JP)
KAWAGUCHI, Noriaki (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
河口 範明 (〒48 山口県周南市御影町1番1号 株式会社トクヤマ内 Yamaguchi, 〒7458648, JP)
SUYAMA, Toshihisa (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
Application Number:
JP2011/060170
Publication Date:
November 03, 2011
Filing Date:
April 26, 2011
Export Citation:
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Assignee:
TOKUYAMA CORPORATION (1-1 Mikage-cho, Shunan-shi Yamaguchi, 48, 〒7458648, JP)
株式会社トクヤマ (〒48 山口県周南市御影町1番1号 Yamaguchi, 〒7458648, JP)
TOHOKU UNIVERSITY (2-1-1 Katahira, Aoba-ku Sendai-shi Miyagi, 77, 〒9808577, JP)
国立大学法人東北大学 (〒77 宮城県仙台市青葉区片平二丁目1番1号 Miyagi, 〒9808577, JP)
FUKUDA, Kentaro (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
福田 健太郎 (〒48 山口県周南市御影町1番1号 株式会社トクヤマ内 Yamaguchi, 〒7458648, JP)
ISHIZU, Sumito (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
石津 澄人 (〒48 山口県周南市御影町1番1号 株式会社トクヤマ内 Yamaguchi, 〒7458648, JP)
KAWAGUCHI, Noriaki (1-1 Mikage-cho, Shunan-sh, Yamaguchi 48, 〒7458648, JP)
International Classes:
G01T3/06; C09K11/00; C09K11/61
Foreign References:
JP2008116462A2008-05-22
Other References:
JOANNA TROJAN-PIEGZA ET AL.: 'CaF2(Eu2+) :LiF- Structual and spectroscopic properties of a new system for neutron detection' RADIATION MEASUREMENTS vol. 45, February 2010, pages 163 - 167, XP026984466
N.J. RHODES ET AL.: 'Pixelated neutron scintillation detectors using fibre optic coded arrays' NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH vol. A392, 1997, pages 315 - 318
N. J. RHODES ET AL.: 'CaF2(Eu2+) :LiF - Structural and spectroscopic properties of a new system for neutron detection' RADIATION MEASUREMENTS vol. 45, 2010, pages 163 - 167
A. CHOUIYAKH ET AL.: 'Thermoluminescence properties of CaF2-LiF:Mn eutectic melt grown composites' PHYS. CHEM. NEWS vol. 13, 2003, pages 139 - 143
Attorney, Agent or Firm:
ONO, Hisazumi et al. (Nippon Shuzo bldg, 1-21 Nishi-shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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Claims: