Abstract

The infrared spectrum of the Meinel bands of the OH and OD free radicals was observed in an inductively coupled plasma (ICP) using the McMath Fourier transform spectrometer at the National Solar Observatory (Kitt Peak). Wavenumbers, intensities, line shapes, and isotope shifts have been determined. The spectrum has been synthesized and optimum molecular parameters obtained using molecular Hamiltonians and nonlinear least-squares fitting techniques. Rotational temperature determinations provide plasma diagnostics in the outer sheath of the plasma.

© 1989 Optical Society of America