Medium-type pulsed fast-neutron detector

In this paper a newly developed medium-type pulsed fast neutron detector is proposed. The detector consists of front insulator, n-p converter, absorbe r, collector and rear insulator. The detection principle is based on the ou tput signal from both recoil-protons of the n-p converter and secondary ele ctrons induced by the recoil-protons passing the interface between the abso rber and the collector. Because of its detection of fast neutrons in the me dium,unlike many trandifional fast neutron detectors which work in the vacu um environment, this detector has obvious advantages. It doe, not need vacu um environment and high voltage power supply. This makes it to be used easi ly. By choosing teflon as the absorber and by choosing graphite as the char ge collector, the contribution of the secondary electrons to the output sig nal can be determined experimentally.