Computer Code for Pre-eguilibrium Process with Multiple Nucleon Emission PREM

This computer code calculates the energy spectra and distribution of excitons at each stage of a multi-nucleon emission process, when the initial exciton distribution is given. The time evolution can also be calculated. The code is based on the master equation approach of the exciton model. Structure of the program is described. A listing of the Fortran code and a sample run is given