HENDI SPECTROSCOPY OF C-H STRETCHING MODES OF METHANE AND SUBSTITUTED METHANE MOLECULES

Abstract

We report the first results with a new Helium Nanodroplet Isolation Spectroscopy machine at UVa. The excitation source is an ARGOS cw PPLN OPO (Aculight). which produces $\sim$2 W in the 3.2-3.9 $\mu$m spectral window. We are extending the spectroscopy of methane in helium, having observed weak, Fermi Resonance induced ro-vibrational transitions of CH$_4$ and the C-H fundamentals of CH$_3$D, CH$_2$D$_2$, and CHD$_3$. We have also observed the spectrum of CH$_3$Cl and plan to report on other substituted methane molecules at the conference.