NEUTRON DETECTOR COATED WITH BORON AND METHOD FOR MANUFACTURE THEREOF

The present invention discloses a boron-coated neutron detector, comprising a cathode tube with a plurality of passages formed therein along its longitudinal direction, the inner wall of each passage being coated with boron material; an electrode wire serving as an anode and arranged longitudinally in each of the passages, the electrode wire adapted to be applied with high voltage; and an insulating end plate to which each end of the cathode tube is fixed, the electrode wire being fixed to the cathode tube via the insulating end plate. Preferably, the cathode tube is formed by jointing a plurality of boron-coated substrates. By arranging in the cathode tube a plurality of passages coated with boron material on their inner walls, the boron-coated neutron detector increases the detection efficiency of the neutron detector, which may reach or even exceed the detection efficiency of the 3 He neutron detector of the same size, and the cost thereof is much cheaper than the 3 He neutron detector.