Retardation of Particle Evaporation from Excited Nuclear Systems Due to   Thermal Expansion
  Particle evaporation rates from excited nuclear systems at equilibrium matter density are studied within the Harmonic-Interaction Fermi Gas Model (HIFGM) combined with Weisskopf's detailed balance approach. It is found that thermal expansion of a hot nucleus, as described quantitatively by HIFGM, leads to a significant retardation of particle emission, greatly extending the validity of Weisskopf's approach. The decay of such highly excited nuclei is strongly influenced by surface instabilities. 
J. T\~oke, L. Pie\'nkowski, M. Houck, W.U. Schr\"oder, and L.G.   Sobotka