Abstract
We review inconsistencies in expressions which are used for exciton distribution functions in precompound decay models utilizing the Ericson type of partial state density. We then compare results of one formulation, the hybrid model, with and without corrected distribution functions for the second hierarchy of configurations. Results are shown for93Nb (n, n′) and (n, p) reactions at 14.7, 45 and 90 MeV incident nucleon energies. The corrected distribution functions change hybrid model predictions by less than 10% for angle integrated spectra, but certain cases are discussed for which the improved treatment should be used due to larger errors from the use of the Ericson expression.
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Dedicated to Professor Theo Mayer-Kuckuk on the occasion of his 60th birthday
This work was performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract number W-7405-ENG-48.