Abstract
The calculation of transmission coefficients for emitted particles is fundamental to applications of the statistical evaporation model for the decay of the compound nucleus. In this work we compare the usual type of optical-model calculation of transmission coefficients for neutron, proton, deuteron, triton, and alpha particles with corresponding ingoing-wave boundary-condition calculations. In the latter case the transmission coefficients simply give the probability for transmission through the real potential barrier. This comparison highlights features that are specific to the optical model such as transparency, shape resonances, and peripheral absorption. It also draws attention to the issue of whether simple barrier transmission coefficients are more appropriate for use in the statistical evaporation model.
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