Dynamical aspects of intermediate-energy nucleus-nucleus collisions.

The production of pions in intermediate energy nucleus-nucleus collisions by incoherent nucleon-nucleon collisions is studied within a microscopic quantal phase-space approach. Employing free production rates for the elementary process N+ N → π+X experimental data for inclusive pion yields are approximately reproduced from 20-150 MeV/u within the first collision approximation. These results indicate that cooperative phenomena - apart from the time-dependent mean field - seem to play a minor role for energetic particle production even at very low bombarding energy. [ABSTRACT FROM AUTHOR]