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Very accurate hyperfine structure components of three fine structure components
with low-N (≤ 2) and low energy in the MW region
were taken from
(1) M. Ikeda, Y. Sekimoto, and S. Yamamoto,
1997, J. Mol. Spectrosc. 185, 21.
All spectroscopic parameters, with the excepotion of
λ, were estimated from CCS, 13CCS
and 13C13CS.
The calculation of the HFS patterns of the low energy
FS components should be good; calculations of the
J = N and more so N – 1
components should be viewed with more caution
because the HFS parameters of the outher 13C
are only moderately well constrained (they are correlated).
Additional caution is advised for higher N transitions.
The dipole moment is assumed to agree with that of the
main isotopolog, see e056002.cat.
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