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Applicability of the Hauser-Feshbach approach for the determination of astrophysical reaction rates

✍ Scribed by T. Rauscher; F.-K. Thielemann; K.-L. Kratz

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
194 KB
Volume
621
Category
Article
ISSN
0375-9474

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✦ Synopsis

Nuclear Astrophysics requires the knowledge of reaction rates over a wide range of nuclei and temperatures. In recent calculations the nuclear level density -as an important ingredient to the statistical model (Hauser-Feshbach) -has shown the highest uncertainties. In a back-shifted fermi-Gas formalism utilizing an energy-dependent level density parameter and employing microscopic corrections from a recent FRDM mass formula, we obtain a highly improved fit to experimental level densities. The resulting level density is used for determining criteria for the applicability of the statistical model.

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