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XIUJUAN ZHUANG AND TIMOTHY C. STEIMLE, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287; ZHONG WANG, Math and Sciences Department, Suffolk County Community College,East Campus, Riverhead, NY, 11901.
The optical spectrum of chloro-methylene, HCCl, has been studied for more than 40 years by both conventional and laser-based spectroscopy. Surprisingly, numerous visible bands have yet to be characterized, due in part to known perturbations. Furthermore, the permanent electric dipole moment, µel, for any state has yet to be determined. Here we report on the field-free and optical Stark spectrum of the Ã1A'' (060)- X1A'(000) band system. A cold molecular beam sample was produced by skimming the output of a pulsed discharge source and the spectrum recorded at a resolution of approximately 30 MHz via LIF detection. The field-free spectrum was analyzed to produce an improved set of spectroscopic parameters for the Ã1A''(060)state. The Stark induced shifts were analyzed to determine the values of the a-component of µel for the X1A^ /(000)state of 0.498(8)D. Small perturbations in the Ã1A''(060)state will be described.