Excited state magnetic hyperfine interactions in gas phase strontium and calcium monohydrides

TC Steimle, TP Meyer, Y Al-Ramadin… - Journal of molecular …, 1987 - Elsevier
TC Steimle, TP Meyer, Y Al-Ramadin, P Bernath
Journal of molecular spectroscopy, 1987Elsevier
Numerous rotational lines in the B 2 Σ+(v′= 0)-X 2 Σ+(v ″= 0) band system of CaH and the
A 2 Π 1 2 (v′= 0)-X 2 Σ (v ″= 0) subband system of SrH have been recorded at sub-
Doppler resolution using the technique of intermodulated fluorescence. The recorded
spectra exhibit a small splitting associated with magnetic hyperfine interactions in both the
ground and the excited electronic states. An analysis of the excited state contributions was
performed and the results were interpreted in terms of the possible nature of the electronic …
Numerous rotational lines in the B 2 Σ+(v′= 0)-X 2 Σ+(v ″= 0) band system of CaH and the A 2 Π 1 2 (v′= 0)-X 2 Σ (v ″= 0) subband system of SrH have been recorded at sub-Doppler resolution using the technique of intermodulated fluorescence. The recorded spectra exhibit a small splitting associated with magnetic hyperfine interactions in both the ground and the excited electronic states. An analysis of the excited state contributions was performed and the results were interpreted in terms of the possible nature of the electronic wavefunction. The results suggest that the effective Hamiltonian needs to be modified in order to give qualitative agreement for the Λ-doubling type magnetic hyperfine parameter. The determined hyperfine parameters for the B 2 Σ+ state are consistent with the current theoretical interpretation of the nature of this state.
Elsevier
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