Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigation of the ground-state spin inversion in the neutron-rich
  47,49Cl isotopes   A first gamma-ray study of 47,49Cl spectroscopy was performed at the
Radioactive Isotope Beam Factory with 50Ar projectiles at 217 MeV/nucleon,
impinging on the liquid hydrogen target of the MINOS device. Prompt
de-excitation gamma-rays were measured with the NaI(Tl) array DALI2+. Through
the one-proton knockout reaction 50Ar(p,2p), a spin assignment could be
determined for the low-lying states of 49Cl from the momentum distribution
obtained with the SAMURAI spectrometer. A spin-parity J = 3/2+ is deduced for
the ground state of 49Cl, similar to the recently studied N = 32 isotope 51K.

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The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th