Prompt neutron logging and uranium ore quantity determining technology based on above-thermal neutron time spectrum
A technology of prompt neutron and thermal neutron, applied in the field of pulse neutron logging technology
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[0048] The epithermal neutron time spectrometer for uranium fission prompt neutron logging disclosed by the present invention includes an epithermal neutron detector, a preamplifier, a shaping and discriminator, a time spectrum analysis and buffer circuit, and a detector high-voltage power supply circuit , Probe low-voltage power supply circuit and other components. Its structure is as figure 2 shown.
[0049] (1) The production is based on 3 Epithermal neutron detector and time spectrometer of He proportional counter tube.
[0050] 3 He proportional counter tube has high thermal neutron detection efficiency, among which 3 He is proportional to the thermal neutron detection efficiency of the counter tube is higher. For this purpose, the cylindrical 3 He proportional counter tubes are used to make thermal neutron detectors and transform them into epithermal neutron detectors. That is, a neutron moderator material (polyethylene) with a high hydrogen content (polyethylene...
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