Method for measuring spectrum and accumulated dose of neutrons by utilizing passive detector
A technique of accumulating dose and detector, which is applied in the field of measuring neutron energy spectrum and accumulating dose by using passive detectors, which can solve the problem that the measurement results of unknown energy neutrons have large uncertainty and cannot obtain incident neutron energy information, and the measurement method It can achieve the effect of light weight, strong adaptability and convenient use
Active Publication Date: 2013-02-13
CHINA INST FOR RADIATION PROTECTION
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The invention relates to a method for measuring the spectrum and accumulated dose of neutrons by utilizing a passive detector. According to the method, a moderator probe is used for measuring a neutron dose in a radiation field; and when data are processed, the energy of incident neutrons is calculated on the basis of different moderation distances experienced by the neutrons incident to each detector, a count measured by each detector is converted into the accumulated fluence of the neutrons, spectrum unscrambling software is used for obtaining the actual fluence spectrum of the incident neutrons, and the accumulated dose of the neutrons is calculated according to the actual fluence of the incident neutrons. According to the measurement method, the supply of power is not required during measurement; the method is high in environmental adaptability, low in cost and convenient to use; and in addition, the energy information of the neutrons can be acquired by the method, uncertainty about measurement results is lower than that of the conventional passive neutron measurement method, and the method can be widely applied to the neutron dose monitoring work of nuclear accident emergencies and environments.
Application Domain
Neutron radiation measurement
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