Statistical Estimation of Distributions of Physical Quantities in Nuclear Fission

摘要

Making use of a model based on the statistical theory, calculations were performed to obtain the mass yields, the most probable charges, the kinetic energies and the prompt neutron yields of fission fragments, and the mass yields of fission products from thermal-neutron-induced fission of 233U 235U 239Pu 241Pu and from the spontaneous fission of 252Cf. The calculations are further extended to fast-neutron-induced fission. The scission-point distance is treated as a parameter varying with the mass number of the heavy fragments of fission. This proved successful in approaching the calculated curves closer to the observed values.It is possible to predict unknown physical quantities in nuclear fission with use made of the method developed in the present work.