Applicability Of The Hauser-Feshbach Approach For The Determination of Astrophysical Reaction Rates

Details Applicability Of The Hauser-Feshbach Approach For The Determination of Astrophysical Reaction Rates Applicability Of The Hauser-Feshbach Approach For The Determination of Astrophysical Reaction Rates

1996-09-02

arxiv.org/abs/astro-ph/9609012v1

Astronomy and Astrophysics

Astrophysics

4 pages, uses espcrc1.sty, Proc. Intl. Conf. "Nuclei in the Cosmos IV", Univ. Notre Dame 1996, Nucl. Phys. A, in press. Postsc

Scientific paper

10.1016/S0375-9474(97)00266-2

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 on neutron-induced reactions.

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