Theoretical Studies on Spontaneous Fission of Californium-252

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In this work influence of the different forms of prompt fission neutron energy spectrums was discussed in the fission fragment center of mass system to the laboratory spectrum of neutrons in spontaneous fission of Californium-252 (Cf-252). It is shown that the Le Couteur spectrum which takes into account multiple neutron emission of neutrons in the center of mass system well describes the observed neutron energy spectrum when transformed to the laboratory system. The Le Couteur in laboratory spectrum, in addition to Watt spectrum, can be used for the representation of observed prompt neutron spectrum of Cf-252 spontaneous fission.