Title:
NEUTRON DETECTOR
Document Type and Number:
Japanese Patent JP3938059
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a neutron detector capable of detecting even neutrons with the energy of ≥ 50 MeV with high accuracy, and discriminating whether or not the detected neutron is obtained from cosmic rays.
SOLUTION: Two sets of a 3He neutron counter 11 and a moderator 12 are provided, one moderator 12 is covered with a lead-sensitized material 15, the accuracy is enhanced by improving the detection sensitivity of super-fast neutrons by the lead-sensitized material 15, and the ratio of the super-fast neutrons from cosmic rays is estimated from the difference of the counted value of both 3He neutron counters 11. One set comprises the 3He neutron counter 11 and the moderator 12. By attaching/detaching a sensitized material corresponding to the lead-sensitized material 15, the count value corresponding to the count value of the two 3He neutron counters 11 can also be obtained.
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Inventors:
Go Ishikura
Application Number:
JP2003024690A
Publication Date:
June 27, 2007
Filing Date:
January 31, 2003
Export Citation:
Assignee:
Fuji Electric Systems Co., Ltd.
International Classes:
G01T1/36; G01T3/00; G01T7/00; (IPC1-7): G01T1/36; G01T3/00; G01T7/00
Domestic Patent References:
| JP2000502459A | ||||
| JP9090049A | ||||
| JP2002528727A | ||||
| JP63172984A | ||||
| JP2002311147A |
Attorney, Agent or Firm:
Hiroshi Yamamoto