Abstract
We investigate the fluiddynamical description of nuclear motion induced by the variational procedure in the presence of one- and two-body dissipation. The equation of motion for the scaling field is established for an abnormal parity mode in a nucleus with a Wood-Saxon density. The local relaxation time can be computed as a function of the distance to the nuclear center, as well as the two-body viscosity. The hydrodynamical and the viscoelastic regimes are specifically examined. It is found that the later appears more appropriate to fit the energy, frequency and time scales of actual nuclei.
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Research Fellow of the Universidad de Buenos Aires
Member of the Scientific Career of the Consejo Nacional de Investigaciones Científicas y Técnicas of Argentina
It is a pleasure to acknowledge enlightening discussions with Dr. L.O. Juri. This work was performed under grants EXO46 from UBA and 97/89 from CONICET.
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Vignolo, C.E., Hernández, E.S. Collision times in a viscoelastic description of nuclei with a diffuse-surface nuclear density. Z. Physik A - Atomic Nuclei 336, 285–289 (1990). https://doi.org/10.1007/BF01292858
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DOI: https://doi.org/10.1007/BF01292858