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This entry is a combined CDMS and JPL entry.
The latest combined fit has been reported by
(1) H. S. P. Müller; B. J. Drouin, and J. C. Pearson,
2009, Astron. Astrophys. 506, 1487.
This work provides new data between 249 and 1139 GHz.
The purely K-dependent terms A and
DK were assumed to agree with
those of the main isotopolog, see e041505.cat.
Predictions with uncertainties larger than
0.5 MHz should be viewed with caution.
14N hyperfine splitting may be resolvable
at low values of J and possibly at the highest
K. Therefore, predictions with
hyperfine splitting have been provided up to
J" = 5 (108 GHz).
Note:
The partition function does not include the
spin-multiplicities of 14N ! Therefore,
partition function values have to be multiplied by 3
when considering 14N hyperfine splitting !
Vibrational contributions have not been
considered in the calculation of the partition
function yet. Rough estimates may be obtained
by scaling the respective ground state value
with the ratio from the main isotopolog.
At low temperatures, it may be necessary to discern between
A-13CH313CN and
E-13CH313CN.
The A state levels are described by
K = 3n, those of E state
by K = 3n ± 1.
The nuclear spin-weight ratio is 2 : 1 for
A-13CH313CN with
K > 0 and all other states, respectively.
The JK = 11
level is the lowest E state level.
It is 5.5713 cm–1 above ground.
The dipole moment was assumed to agree with
that of the main isotopolog, see e041505.cat.
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