Abstract:
A new type of D-T neutron tube with time function has been designed,which will replace
252Cf source and be used as an interrogation source for the Nuclear Materials Identification System（NMIS） and the reactor noise analysis system. An alpha particle detector is installed in a D-T neutron tube, the time of the emitted neutron will be measured by detecting the alpha particles generated by the T（d,n）
4He reaction.The design accords with the conditions of the reactor noise analysis system,which relies on the mature craft of neutron tube in China.
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