Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ab initio calculations of the {33}S 3p4 3P_J and {33}S- / {37,35}Cl 3p5
  2Po_J hyperfine structures   We present highly correlated multi-configuration Hartree-Fock (MCHF)
calculations of the hyperfine structure of the 3p5 2Po_J levels of {33}S- and
{35,37}Cl. We obtain a good agreement with observation. The hyperfine structure
of the neutral sulfur {33}S 3p4 3P_J lowest multiplet that has never been
measured to the knowledge of the authors, is also estimated theoretically. We
discuss some interesting observations made on the description of the atomic
core in MCHF theory.

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The categories of this paper are: hep-th
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
2
The categories of this paper are: math
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The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat