Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First spectroscopy of 61Ti and the transition to the Island of Inversion
  at N = 40   Isomeric states in 59,61Ti have been populated in the projectile
fragmentation of a 345 AMeV 238U beam at the Radioactive Isotope Beam Factory.
The decay lifetimes and delayed gamma-ray transitions were measured with the
EURICA array. Besides the known isomeric state in 59Ti, two isomeric states in
61Ti are observed for the first time. Based on the measured lifetimes,
transition multipolarities as well as tentative spins and parities are
assigned. Large-scale shell model calculations based on the modified LNPS
interaction show that both 59Ti and 61Ti belong to the Island of Inversion at
N=40 with ground state configurations dominated by particle-hole excitations to
the g_9/2 and d_5/2 orbits.

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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an