With the Cologne submillimeter-wave supersonic jet spectrometer, we extended molecular jet spectroscopy with backward wave oscillators up to frequencies of about 600 GHz. For the first time, the van der Waals stretching vibration of the Ar-CO molecular complex was detected in direct absorption. We m
Submillimeter-Wave Absorption Spectroscopy of the Ar–CO Complex: Detection of the van der Waals Bending Vibration
✍ Scribed by M. Hepp; R. Gendriesch; I. Pak; F. Lewen; G. Winnewisser
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 109 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0022-2852
No coin nor oath required. For personal study only.
✦ Synopsis
Van der Waals bending rovibrational transitions of the Ar-CO complex were observed between 308 and 383 GHz using submillimeter-wave absorption spectroscopy in a pulsed supersonic jet. The submillimeter radiation was generated by a phase-stabilized backward wave oscillator source. Fourteen transitions of the P and R branch of the bending vibration were measured with an accuracy of about 100 kHz. The frequencies were fitted using effective molecular parameters including the band origin and the rotational constants for the ground state and for the excited bending vibrational state.
📜 SIMILAR VOLUMES
The microwave rotational spectrum of the van der Waals trimer \(\mathrm{Ar}_{2}-\mathrm{CO}_{2}\) has been observed between 7 and \(18 \mathrm{GHz}\) using a Balle-Flygare type pulsed molecular beam microwave Fourier transform (MWFT) spectrometer. Twenty-one transitions, all \(b\)-type, \(K_{a}+K_{c