Title:
中性子検出器の中性子感度測定方法
Document Type and Number:
Japanese Patent JP4357125
Kind Code:
B2
Abstract:
Disclosed is a method of monitoring the neutron sensitivity of a neutron detector. Voltage having a predetermined potential difference is applied between an anode and a cathode without irradiating the neutron detector with neutrons to permit an alpha-ray to be emitted from the nuclear fission substance. The alpha-ray ionizes the ionizing gas to form an alpha-ray current (Ialpha) flowing between the anode and the cathode. The current (Ialpha) thus formed is monitored. Also, with the monitoring region in which the applied voltage and the alpha-ray current (Ialpha) bear a substantially proportional relationship, obtained is an extrapolated zero-volt alpha-ray current (Ialpha0) at 0V of the applied voltage between the anode and the cathode from the proportional relationship by an extrapolating method, and the extrapolated zero-volt alpha-ray current (Ialpha0) is correlated with the neutron sensitivity.
Inventors:
Masato Shibasaki
Toyoki Tanaka
Shigehiro Kono
Atsushi Kimura
Toyoki Tanaka
Shigehiro Kono
Atsushi Kimura
Application Number:
JP2001014051A
Publication Date:
November 04, 2009
Filing Date:
January 23, 2001
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01T3/00; G01T1/00; G01T1/18; G01T1/185
Domestic Patent References:
| JP57165779A | ||||
| JP52095282A | ||||
| JP55106370A | ||||
| JP50149389A | ||||
| JP58171688A | ||||
| JP62245178A |
Attorney, Agent or Firm:
Norio Ohu