Neutron ray detecting system, and method of setting neutron ray detecting system
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United States of America Patent
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Sep 25, 2018
Grant Date -
Sep 6, 2018
app pub date -
Feb 21, 2018
filing date -
Mar 2, 2017
priority date (Note) -
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Abstract
By acquiring the neutron ray wave height distribution of the neutron rays and the gamma ray wave height distribution of only the gamma rays included in the radiant rays, how much gamma rays are detected as noise can be ascertained in a case where a certain determination threshold value Qth is set. That is, a relationship between the determination threshold value Qth and detection accuracy can be ascertained. Since the distributions are acquired on the basis of two measurements in a case where a filter that cuts the neutron rays N is used and in a case where the filter is not used, the relationship between the determination threshold value Qth and the detection accuracy can be accurately ascertained. Therefore, a determination threshold value adjusting unit can adjust a suitable determination threshold value Qth in conformity with demanded detection accuracy on the basis of the distributions.
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