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Title:
RADIATION SURVEILLANCE SYSTEM USING PLASTIC SCINTILLATOR AS DETECTOR
Document Type and Number:
Japanese Patent JP2009198365
Kind Code:
A
Abstract:

To provide a detector having a light weight and a large size, and having a more inexpensive price in comparison with an NaI (T1) detector, capable of measuring fast neutrons as well as analyzing a -ray spectrum such as a conventional NaI (T1) detector.

The detector has PS 31/36, light guides 33a/33b, PM parts 35a/35b, and preamplifier parts 37a/37b. The PS (plastic scintillators) 31/36 convert -rays and neutrons into light energy respectively. The light guides 33a/33b have function for guiding detected light to the photomultipliers 35a/35b. The photomultipliers 35a/35b convert a light signal into an electric signal. The preamplifier parts 37a/37b have function for amplifying the electric signal from the photomultipliers. Boron-containing paraffine 32 has function for absorbing neutrons passed a 5-mm detector 36.


Inventors:
IMAIZUMI MASAYUKI
TSUCHIHARA TAKEO
YOSHIMOTO SHUHEI
ISHIDA SATOSHI
UCHIYAMA SADAYUKI
YUKI YOICHI
IKEDA KAZUTAKA
Application Number:
JP2008041239A
Publication Date:
September 03, 2009
Filing Date:
February 22, 2008
Export Citation:
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Assignee:
NAT AGRICULTURE & FOOD RES ORG
CLEAR PULSE KK
OYO CORP
International Classes:
G01T3/06; G01T1/203; G01T7/00
Domestic Patent References:
JP2006510033A2006-03-23
JPH09304542A1997-11-28
JPH10232284A1998-09-02
JPS508353B11975-04-03
JPS5214474A1977-02-03
JPH10288671A1998-10-27
JPH0274890A1990-03-14
JPS58151863U1983-10-12
JP2000147125A2000-05-26
JPH09197050A1997-07-31
JP2001311780A2001-11-09
JPH06235772A1994-08-23
Foreign References:
WO2007139915A22007-12-06
WO2005008287A12005-01-27
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Toshiaki Watanabe
Kenichi Imamura



 
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