Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nuclear mass systematics and nucleon-removal thresholds; application to
  17-Na   A survey of known threshold excitations of mirror systems suggests a means to
estimate masses of nuclear systems that are uncertain or not known, as does a
trend in the relative energies of isobaric ground states. Using both studies
and known mirror-pair energy differences, we estimate the mass of the nucleus
17-Na and its energy relative to the p+16-Ne threshold. This model-free
estimate of the latter is larger than that suggested by recent structure
models.

21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph