Three new rovibrational bands of Ar-D2O have been observed in the ν2 bending region of D2O using a quantum cascade laser based cavity ringdown spectrometer. In addition, further observations of the Π(110, ν2 = 1) ← Σ(101) band reported by Li et al. (J. Mol. Spectrosc. 272 (2012) 27-31) have been made. All bands were fit by treating the complex using a pseudo-diatomic model which treats the D2O as a free rotor within the complex. Molecular constants have been obtained using this model and are reported with deviations in the fits ranging from 0.0002 cm-1 to 0.0005 cm-1. Two of the newly observed bands are tentatively assigned as the Π(202, ν2 = 1) ← Σ(111) and Π(211, ν2 = 1) ← Σ(202) bands, which have not previously been observed in other spectral regions.
- Quantum cascade laser
- Van der Waals complex
- Water clusters
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry