Fragmentation of relativistic carbon nuclei undergoing inelastic collisions with propane and tantalum nuclei

New experimental data on the relative yields and on the momentum and correlation characteristics of various C-12 spectator fragments formed in C-12 collisions with propane (C3H8) and tantalum nuclei at a primary momentum of 4.2 GeV/c per nucleon are presented and discussed. The cross sections for the production of spectator protons, deuterons, and tritons and their momentum distributions are studied as functions of the target mass number and impact parameter of a nucleus-nucleus interaction. It is shown that some of these dependences weaken or disappear in going over to the rest frame of a residual nucleus undergoing fragmentation. This means that the dependences in question are associated with its decay in flight.