Application of n-γ discrimination in ~(252)Cf spontaneous neutron TOF spectra measurement

The BC501 scintillator is used as a fast neutron detector. The effect that the pulse rise time method was used to discriminate γ from 252Cf spontaneous neuron TOF spectra is studied in the experi ment. A pulse rise time separation spectra of γ and 252Cf spontaneous neuron upon 1 MeV is obtained, the n-γ separation function reaches to 4. 6. When the result of pulse rise time separation coincides with the time-of-flight spectra in which the neutron energy is upon 0. 5MeV、0. 8MeV and 1.0MeV, compar ing with the anticoincidence,γ was eliminated 99. 90% at least.

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