Abstract
The collision rate in an infinite Fermi system having a deformed Fermi surface is computed in the limit of small deformation. For a given amount of internal energy, the damping rate is nearly independent of temperature. The calculation is applied to thermalization in heavy ion collisions. We find that the collisional damping time is comparable to the duration of the collision for medium-weight nuclei. Thus the predictions of mean field theory, such as the presence of a fusion window at small impact parameters, will only have validity for lighter ions.
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Supported by the National Science Foundation, Grant No. PHY76-20097A01
The author acknowledges helpful criticism of the manuscript by the referee and the editor, leading to a revised conclusion.
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Bertsch, G. The collision integral in nuclear matter at zero temperature. Z Physik A 289, 103–105 (1978). https://doi.org/10.1007/BF01408501
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DOI: https://doi.org/10.1007/BF01408501