Slow neutron detection device

Abstract

The invention discloses a slow neutron detection device. The slow neutron detection device comprises a first slow-neutron conversion body, a second slow-neutron conversion body, a reading-out electrode wire set and a negative electrode wire set, wherein the reading-out electrode wire set and the negative electrode wire set are arranged between the first slow-neutron conversion body and the second slow-neutron conversion body. As a reading-out circuit is arranged between the two slow-neutron conversion bodies, and under the condition that the boundary dimension of a detector is invariable, the electron drift distance is reduced by one half, and the average over-threshold probability of signals is increased.

Description

technical field [0001] The present disclosure relates to slow neutron detection, in particular, to a slow neutron detection device that improves the efficiency of slow neutron detection. Background technique [0002] With the increasing application of slow neutron detection and imaging technology in homeland security, material monitoring, and measurement of slow neutron scattering sources, the demand for slow neutron detectors is also increasing. However, the widely used 3 He gas can no longer meet the growing demand, and different types of new slow neutron detectors have been developed to replace 3 He, including gas slow neutron detectors, scintillator slow neutron detectors, semiconductor slow neutron detectors, etc. [0003] For a slow neutron detector, the slow neutron converter is an important structure. Slow neutrons themselves have no charge, except for a few slow neutron sensitive nuclides such as 6 Li, 10 B, Gd, etc., the reaction cross sections of slow neutron...

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Problems solved by technology

However, the detection efficiency of slow neutrons in a single-layer flat-plate ionization chamber is relatively low, and methods such as multiple stacking and slow neutron grazing incidence are required to improve the overall slow neutron detection efficiency, but this will bring a negative impact on the overall signal readout process. Very high pressure, inconvenient to realize large-area slow neutron detection

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