10min:

LEONID A. KALEDIN AND MICHAEL C. HEAVEN, Department of Chemistry, Emory University, Atlanta, GA 30322.

The Yellow-Green band system of TiCl⁺ has been studied using a dual-beam laser absorption technique in a hollow cathode discharge, and conventional emission spectroscopy. The quartz discharge cell for emission spectroscopy consisted of a 5 cm long, 2 mm internal diameter capillary similar to that used for a velocity modulation emission spectroscopy. The discharge was modulated at 25-125 kHz by a power supply which produced a bipolar sine wave. Samples of TiCl₄ in Ar were flowed slowly through the cell from the center of the capillary and symmetrically pumped out via the electrodes.

The Yellow-Green band system was observed previously in the emission and absorption spectra of TiCl⁺. Molecular parameters and internuclear distances for the [17.9]³ and X³ states of the ⁴⁸Ti³⁵Cl⁺ and ⁴⁸Ti³⁷Cl⁺ isotopomers will be presented.

Work supported by AFOSR and the Mission Research Corporation.