On the heavy nuclei collision dynamics in the range of 10-100 MeV per a nucleon

Experimental and theoretical situation of heavy ions collision in the energy range of 10 < or approximately E < or approximately 100 MeV per a nucleon is considered. In one- dimensional gas-dynamic model the approximate problem solution for central collision of two identical heavy nuclei has been found. The macroscopic criterion of stability in relation to the system into fragments dislocation has been found. The formula connecting the nuclear matter compression degree with characteristic features of the calculated energy spectra of fragments is given. The gas-dynamic study shows that the internal emitted nucleons motion imposition on the collective velocity field at the composite system dislocation may lead to the spectrum hardening which possibly clears up the high energy particles nature in heavy ions reactions