Population and Decay of Entry States in Fission Products

We develop the thermo-dynamical model for the application in nuclear fission and give expressions for the determination of the temperature of the micro-canonical ensemble of fission products. With the temperature the distribution functions for excitation energy and spin in the fission fragments are specified. The knowledge of the entry states in terms of excitation and spin allows the further use of the statistical model to calculate characteristics of neutron evaporation and prompt gamma decay. We propose a versatile spectrometer to test the model via the measurement of the decay characteristics.