15min:

R. A. PROVENCAL, J. B. PAUL, K. ROTH, R. CASAEAS, A. PETERSSON AND R. J. SAYKALLY, Department of Chemistry, UC Berkeley, Berkeley, CA 94720.

We are vigorously pursuing extension of cavity ringdown laser absorption spectroscopy into the infrared region.^, With medium resolution (1000 MHz), we have measured spectra of \chemH₂O, \chemD₂O, \chemCH₃OH, \chemCH₃CH₂OH, and \chemCH₃(CH₂)₃OH clusters in the spectral region between 2.8 and 6~microns. By employing a laser vaporization/supersonic molecular beam source, we have also studied carbon clusters in this spectral region. High resolution (<100~MHz) cavity ringdown experiments are also being pursued using a novel Alexandrite based laser system.