Cavity Ring-down UV spectroscopy of the C${}^2{\Sigma }^{+}$-X${}^2\Pi$ electronic transition of CH

Chris Medcraft, Harold Linnartz, Wim Ubachs

Rotationally resolved spectra of the C${}^2{\Sigma }^{+}$-X${}^2\Pi$ electronic system of the CH radical were measured using cavity ring-down spectroscopy in supersonically expanding, planar hydro…