Table 1
Spectroscopic properties of the observed species and transitions.
| Molecule | B a | μ 0 b | Transitionc | Frequencyd | A ul e | g u f | ||
| MHz | Debye | MHz | s-1 | |||||
|
|
||||||||
| 13CN | 54353.130 | 1.45 | 1 3/2 2 3 → 0 1/2 1 2 | 108780.201 | 1.05×-5 | 7 | ||
| C15N | 54958.510 | 1.45 | 1 3/2 2 → 0 1/2 1 | 110024.590 | 1.09×-5 | 5 | ||
| 1 3/2 1 → 0 1/2 0 | 110023.540 | 7.16×-6 | 3 | |||||
| 1 3/2 1 → 0 1/2 1 | 110004.092 | 3.70×-6 | 3 | |||||
| 1 1/2 1 → 0 1/2 1 | 109689.610 | 7.10×-6 | 3 | |||||
| 1 1/2 1 → 0 1/2 0 | 109708.986 | 3.67×-6 | 3 | |||||
| 1 1/2 0 → 0 1/2 1 | 109733.657 | 1.08×-5 | 1 | |||||
Notes.
For C15N, the quantum numbers are NJF with J = N + S and F = J + I, where S is the electronic spin and I = 1/2 is the nuclear spin of 15N. For 13CN, we follow the CDMS convention (which differs from Bogey et al. 1984), where the quantum numbers are NJF1F with F1 = J + I1, F = F1 + I2 where I1 = 1/2 and I2 are the nuclear spin of 13C and 14N respectively.
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