Dynamical effects in the Coulomb expansion following nuclear fragmentation

The effects of the Coulomb expansion on the fragment kinetic energy spectrum for a fragmentating hot nuclear system is investigated. In particular, ${}_{}{}^{12}{}_{}{}^{}\mathrm{fragment}$ spectra are calculated and compared with those predicted by the uniform expansion approximation. The results indicate that the energy spectra of fragments are quite sensitive to the details of the Coulomb expansion treatment.