Hard Gammas from Low-Energy Heavy-Ion Collisions

Abstract

Single-particle radiative mechanism of $\gamma$ emission embedded into the pre-equilibrium exciton model is used to calculate the $\gamma$ emission from a decay of ${}^{160}$Er${}^{\ast }$ created in two different ways. The initial stage of a reaction is described using momentum-space overlaps of colliding nuclei. We can reproduce the main features of the observed $\gamma$ energy spectra including the fact that the spectrum observed in more symmetric combination is slightly harder than in the other case.

7 pages, LaTeX file followed by 1 PostScript Figure To be published in "Acta Physica Slovaca"(fax (+42-7)376085)