SPECTRA OF ETHANE IN He DROPLETS IN THE 3 $\mu$m RANGE

Abstract

The infrared spectra of ethane molecules embedded in He droplets have been studied via depletion spectroscopy in the $\nu$ = 2880-3000 cm$^{-1}$ spectral range. Four features observed in the spectra are assigned as the $\nu$$_{5}$, $\nu$$_{8+11}$(perpendicular and parallel components), and $\nu$$_{7}$ vibrational bands. Band origins and rotational constants for ethane in He are obtained and compared with corresponding gas phase values. Spectra of large ethane clusters (C$_{2}$H$_{6}$)$_{\italicize{n}}$ (with $\italicize{n}$ = 1300-13000) in He are also reported.