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Retardation of Particle Evaporation from Excited Nuclear Systems Due to Thermal Expansion

J. Tõke·L. Pieńkowski·M. Houck·W. U. Schröder·L. G. Sobotka
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Abstract

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.

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J. Tõke, L. Pieńkowski, M. Houck, W. U. Schröder, L. G. Sobotka. 2005-07-26. Retardation of Particle Evaporation from Excited Nuclear Systems Due to Thermal Expansion. https://doi.org/10.1103/physrevc.72.031601

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