Neutron emission behavior in the fission of 252Cf accompanied by light charged particles

The neutron emission probabilities for long-range alpha (LRA), helium-3, triton and proton-accompanied fission of 252Cf are measured in a three-parameter experiment in which a liquid scintillation detector and a telescope are used to record the number of prompt neutrons and the energy of light charged particles. The average numbers of neutrons per fission for various particle-accompanied fission events mentioned above are 3.13 +- 0.02, 3.09 +- 0.09, 2.95 +- 0.05 and 3.24 +- 0.07, respectively. The differentials of the average number of neutrons with respect to the energy of LRA particles and tritons are -0.037 +- 0.003 and -0.039 +- 0.008 neutron/MeV, respectively. The dependence of the width of neutron emission probability on LRA energy, described by Diven's empirical formula, and the correlations between the neutron number and triton energy have not been reported by other papers