Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-neutron removal reactions on light neutron-rich nuclei   A study of high energy (43--68 MeV/nucleon) one-neutron removal reactions on
a range of neutron-rich psd-shell nuclei (Z = 5--9, A = 12--25) has been
undertaken. The inclusive longitudinal and transverse momentum distributions
for the core fragments, together with the cross sections have been measured for
breakup on a carbon target. Momentum distributions for reactions on tantalum
were also measured for a subset of nuclei. An extended version of the Glauber
model incorporating second order noneikonal corrections to the JLM
parametrisation of the optical potential has been used to describe the nuclear
breakup, whilst the Coulomb dissociation is treated within first order
perturbation theory. The projectile structure has been taken into account via
shell model calculations employing the psd-interaction of Warburton and Brown.
Both the longitudinal and transverse momentum distributions, together with the
integrated cross sections were well reproduced by these calculations and
spin-parity assignments are thus proposed for $^{15}$B, $^{17}$C, $^{19-21}$N,
$^{21,23}$O, $^{23-25}$F. In addition to the large spectroscopic amplitudes for
the $\nu2$s$_{1/2}$ intruder configuration in the N=9 isotones,$^{14}$B and
$^{15}$C, significant $\nu2$s$_{1/2}^2$ admixtures appear to occur in the
ground state of the neighbouring N=10 nuclei $^{15}$B and $^{16}$C. Similarly,
crossing the N=14 subshell, the occupation of the $\nu2$s$_{1/2}$ orbital is
observed for $^{23}$O, $^{24,25}$F. Analysis of the longitudinal and transverse
momentum distributions reveals that both carry spectroscopic information, often
of a complementary nature. The general utility of high energy nucleon removal
reactions as a spectroscopic tool is also examined.

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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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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: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org