Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasirelativistic calculation of 4s$^2$4p$^5$, 4s$^2$4p$^4$4d and
  4s4p$^6$ configuration spectroscopic parameters for the W$^{39+}$ ion   The ab initio quasirelativistic Hartree-Fock method developed specifically
for the calculation of spectral parameters of heavy atoms and highly charged
ions is used to derive spectral data for the 4s$^2$4p$^5$, 4s$^2$4p$^4$4d and
4s4p$^6$ configurations of the multicharged tungsten ion W$^{39+}$. The
relativistic effects are taken into account in the Breit-Pauli approximation
for the quasirelativistic Hartree-Fock radial orbitals. The configuration
interaction method is applied to include the electron correlation effects.
Produced data are compared with existing experimental measurements and
theoretical calculations.

12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas