  A formation zone intranuclear cascade model is applied to peripheral
nucleus-nucleus collisions. We calculate the excitation energies of
prefragments, treat their further nuclear disintegration and introduce a model
for nuclear deexcitation by photon emission. Results are compared to data on
target associated particle production in nucleus-nucleus collisions. We discuss
implications of these models to the description of particle production in the
fragmentation regions. Special emphasis is put on applications for air showers
induced by cosmic ray nuclei and for residual nucleus production at heavy ion
colliders.
