The experimental data was taken from
(1) M. Bogey, C. Demuynck, and J. L. Destombes,
1989, Chem. Phys. Lett. 155, 265;
and from
(2) Y. Oshima and Y. Endo,
1993, Chem. Phys. Lett. 213, 95.
For transitions with N = 5 4 or higher, the hyperfine splitting is
smaller than ca. 1 MHz for the strong hfs components.
Therefore, predictions
without hyperfine structure are also available.
The dipole moment is from an ab initio calculation by
(3) P. W. Fowler and A. J. Sedlej, 1991, Mol. Phys. 73, 43.
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