Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental radiative lifetimes for highly excited states and
  calculated oscillator strengths for lines of astrophysical interest in singly
  ionized cobalt (Co II)   This work reports new experimental radiative lifetimes and calculated
oscillator strengths for transitions of astrophysical interest in singly
ionized cobalt. More precisely, nineteen radiative lifetimes in Co+ have been
measured with the time-resolved laser-induced fluorescence technique using one-
and two-step excitations. Out of these, seven belonging to the high lying
3d$^7$($^4$F)4d configuration in the energy range 90697 - 93738 cm$^{-1}$ are
new, and the other twelve from th3d$^7$($^4$F)F)4p configuration with energies
between 45972 and 49328 cm$^{-1}$1 are compared with previous measurements. In
addition, a relativistic Hartree-Fock model including core-polarization effects
has been employed to compute transition rates. Supported by the good agreement
between theory and experiment for the lifetimes, new reliable transition
probabilities and oscillator strengths have been deduced for 5080 Co II
transitions in the spectral range 114 - 8744 nm.

13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess