Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the nucleon instability of heavy oxygen isotopes   The instability of the $^{26}$O nucleus with respect to decay through the
two-neutron channel is investigated. It is shown that this isotope, unobserved
in the fragmentation experiments, can exist as a narrow resonance in the system
$^{24}$O+2n. A role of deformation in formation of the neutron-drip line in the
region $N\sim 20$ is discussed.

9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys