Neutron detection method and device for reducing gamma ray interference by using NaI (TI) scintillator

The invention belongs to the radiation measurement technical field and relates to a neutron detection method and device for reducing gamma ray interference by using a NaI (TI) scintillator. Accordingto the neutron detection method and device of the invention, a 6LiI scintillator detector is adopted to detect neutrons in a mixed radiation field; a first voltage amplitude discrimination threshold is set in a first comparison circuit connected with a 6LiI scintillator; and the signals of low-energy gamma rays measured by the 6LiI scintillator are filtered out. In order to eliminate the influenceof high-energy gamma rays on a measurement effect, the neutron detection method of the present invention includes the following steps that: (S1) a NaI (TI) scintillator detector using a NaI (TI) scintillator is arranged near a 6LiI scintillator; (S2) a second voltage amplitude discrimination threshold is set in a second comparison circuit connected with the NaI (TI) scintillator; (S3) first signals measured by the 6LiI sc