Title:
Apparatus for measurement or radiation
Document Type and Number:
Japanese Patent JP6066835
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that electrostatic discharge light noise generated inside a radiation detector cannot be detected by waveform identification because there is no difference between a noise pulse waveform and a signal pulse waveform.SOLUTION: Photoelectric peaks entering a higher energy window NH are counted by high energy window count means 11b. Compton scattering entering a low energy window NL are counted by low energy window count means 11a. If a count rate obtained by a high energy window count rate arithmetic unit 52 is greater than or equal to a set count rate, an alarm is outputted. A ratio of a low energy count rate increment to a high energy count rate increment at that time is obtained by a window ratio diagnosis unit 511. If the ratio is within a set range, this is determined to be an increase in radiation of the measured nuclide; if the ratio exceeds the set range, this is determined to be a noise inclusion.
Inventors:
Sadamitsu Nagai
Kenichi Mogi
Kenichi Mogi
Application Number:
JP2013114859A
Publication Date:
January 25, 2017
Filing Date:
May 31, 2013
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01T1/17; G01T1/167; G21C17/00; G21C17/003
Domestic Patent References:
| JP2012013611A | ||||
| JP2013088266A | ||||
| JP2008215907A | ||||
| JP2011123009A | ||||
| JP2012013563A | ||||
| JP62228962A |
Attorney, Agent or Firm:
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa