Rotational level spacings in HD from vibrational saturation spectroscopy
F. M. J. Cozijn,
M. L. Diouf,
V. Hermann
et al.
Abstract:The R(1), R(3) and P(3) ro-vibrational transitions in the (2-0) overtone band of the HD molecule are measured in Doppler-free saturation using the technique of NICE-OHMS spectroscopy. For the P(3) line, hitherto not observed in saturation, we report a frequency of 203 821 936 805 (60) kHz. The dispersive line shapes observed in the three spectra show strong correlations, allowing for extraction of accurate information on rotational level spacings. This leads to level spacings of ∆ (J=3)−(J=1) = 13 283 245 098 … Show more
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