Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Breakdown of N = 8 magic number near the neutron drip line from parallel
  momentum distribution analyses   Using two theoretical models (the post form finite range distorted wave Born
approximation and the adiabatic model) we calculate the parallel momentum
distribution of the charged core in the Coulomb breakup of Be isotopes on a
heavy target at 100 MeV/u. We show that the full width at half maxima of the
parallel momentum distribution can be used to study the breakdown of N = 8
magic number away from the valley of stability.

18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org