Resonance enhanced multiphoton ionization spectroscopy of NHD2via the 1E′′-state

Literature Information

Publication Date 2013-03-15
DOI 10.1039/C3CP00012E
Impact Factor 3.676
Authors

Chung-Hsin Yang, Gautam Sarma, Ashim Kumar Saha, David H. Parker, Colin M. Western


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Abstract

Rotational analysis of the (2 + 1) resonance enhanced multiphoton ionization (REMPI) spectrum of the 1E′′ Rydberg state of the ammonia isotopologue NHD2 is reported. While the electronic degeneracy is lifted in NHD2 the splitting is small enough that interactions between the two states must be considered, particularly to model the intensity of the transitions. A simple model is developed to account for these interactions, relating them to terms present in the symmetric isotopologues. Spectroscopic parameters for the zero point and (ν2′ = 1–6) vibrational levels of the B 1E′′ state have been derived using this model and the spectra are accurately simulated for the first time using the PGOPHER program. The current work provides the basis for on-going velocity map imaging studies of rotational energy transfer in the mixed isotopologues of ammonia.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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