Unified calculation of photon and pion spectra in intermediate energy heavy ion reactions

We calculate the energy spectra of high energy photons and pions produced in heavy ion collisions at intermediate energies of around 75 MeV/nucleon. We use a unified approach based on the Boltzmann-Uehling-Uhlenbeck theory and the assumption that both pions and high energy gamma rays are produced in individual nucleon-nucleon collisions during the course of the heavy ion reaction. A comparison to existing data for energy spectra of neutral pions and high energy photons shows good agreement.