HIGH RESOLUTION OVERTONE SPECTROSCOPY OF ACETYLENE VAN DER WAALS COMPLEXES
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Date
2011
Journal Title
Journal ISSN
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Publisher
Ohio State University
Abstract
The latest upgrades and results from the FANTASIO+ set-up, \textit{Mol. Phys.} 2010, \textbf{108}, 2158-2164} (for 'Fourier trANsform, Tunable, diode and quadrupole mAss spectrometers interfaced to a Supersonic expansIOn') are presented. Thanks to the improvements of the calibration (better than $\pm1\times 10^{-3}$ cm$^{-1}$ accuracy) and the ring-down time (130 $\mu$s), the spectrum of C$_2$H$_2$-N$_2$ around 6500 cm$^{-1}$ was recorded as well as absorption bands due to combined excitations of intra and intermolecular modes of C$_2$H$_2$-Ar, C$_2$H$_2$-CO$_2$ and C$_2$H$_2$-N$_2$O. A hot absorption band of the van der Waals complex C$_2$H$_2$-Ar was also observed. The first analyses of these spectra will be presented.\\ \\ Along the development of the FANTASIO+ set-up, a new injection system to probe samples liquid at STP conditions, and a pulse injector are currently under implementation. Those upgrades will allow the study of organic and prebiotic molecules and a better cooling of the gas in the expansion, respectively. The first results will also be presented.
Description
Author Institution: Service de Chimie quantique et Photophysique CP160/09, Faculte des Sciences, Universite Libre de Bruxelles (U.L.B.), Av. Roosevelt, 50, B-1050, Bruxelles, Belgium