Abstract
The basic approximations of the Griffin model for nuclear reactions are reexamined. Proton-neutron distinguishability and the Pauli exclusion principle are treated in an improved way. Several improvements in the model input values are suggested. Direct reaction mechanisms are systematically considered, and semi-empirical descriptions are proposed for those not included in the Griffin model calculations (knockout and inelastic processes involving alpha particles and stripping and pickup). When all of these points are considered, good agreement with experimental energy spectra for emitted particles are obtained without arbitrary and unphysical factors in the particle emission rates and without the artificial projectile dependence previously needed for the average residual two-body matrix element.
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Supported by the US Energy Research and Development Administration
The author wishes to acknowledge helpful discussions with Dr. Steven Grimes and the hospitality of the Triangle Universities Nuclear Laboratory. The credit for any progrees that has been made here goes to the Lord, while the author accepts full responsibility for any errors.
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Kalbach, C. The Griffin model, complex particles and direct nuclear reactions. Z Physik A 283, 401–411 (1977). https://doi.org/10.1007/BF01409522
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DOI: https://doi.org/10.1007/BF01409522