Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of the Nuclear Magnetic Octupole Moment of 87Rb from
  Spectroscopic Measurements of Hyperfine Intervals   The magnetic octupole moment of 87Rb is determined from hyperfine intervals
in the 5p 2P[3/2] state measured by Ye et al. [Opt. Lett. 21, 1280 (1996)].
Hyperfine constants A = 84.7189(22) MHz, B = 12.4942(43) MHz, and C = -0.12(09)
kHz are obtained from the published measurements. The existence of a
significant value for C indicates the presence of a nuclear magnetic octupole
moment Omega. Combining the hyperfine constants with atomic structure
calculations, we obtain Omega = -0.58(39) (b muN). Second-order corrections
arising from interaction with the nearby 5p 2P[1/2] state are found to be
insignificant.

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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin