Abstract
We review the statistical model and its application for the process of nuclear fission. The expressions for excitation energy and spin distributions for the individual fission fragments are given. We will finally emphasize the importance of measuring prompt gamma decay to further test the statistical model in nuclear fission with the FIPPS project.
Highlights
Despite considerable efforts since the discovery of nuclear fission about 73 years ago a coherent theory of the process is still missing
We will emphasize the importance of measuring prompt gamma decay to further test the statistical model in nuclear fission with the FIPPS project
Shell corrections calculated for each deformation step lead to structures in the potential energy surfaces, and the most probable fission configuration is determined by following the steepest descend in this multidimensional potential energy landscape
Summary
Despite considerable efforts since the discovery of nuclear fission about 73 years ago a coherent theory of the process is still missing. Two antagonistic approaches have been formulated to estimate mass and nuclear charge distributions for a fissioning system, and the distribution functions for fragment excitation and spin. In general only the energy of the ground-state is needed in this approach, and there is no dependence on level densities In contrast to this geometric approach is the statistical model in nuclear physics. We will present a new spectrometer which will allow to test important aspects of fission decay with respect to the statistical model.
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