			15min:

ANALYSIS OF THE HIGH-RESOLUTION MID-INFRARED SPECTRUM OF DEUTERATED WATER CLUSTERS.

BRADLEY M. GIBSON AND JACOB T. STEWART, Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801; BENJAMIN J. MCCALL, Departments of Chemistry and Astronomy, University of Illinois at Urbana-Champaign, Urbana, IL 61801.

We have obtained rotationally-resolved infrared spectra of fully deuterated water clusters and Ar-D₂O clusters in the D₂O bending region near 1185-1205 cm^-1 using a continuous-wave cavity ringdown spectrometer (cw-CRDS) with a quantum cascade laser (QCL) light source. These clusters were produced in a continuous supersonic expansion from a 150 µm x 1 cm slit using argon carrier gas, giving rovibrational transitions with a full width at half maximum of approximately 20 MHz. We will present our assignment of the Ar-D₂O spectra and preliminary analysis of spectra of other clusters (particularly our results for (D₂O)₂).