Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Applicability Of The Hauser-Feshbach Approach For The Determination of
  Astrophysical Reaction Rates   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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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin