			10min:

HIGH RESOLUTION INTRACAVITY LASER SPECTRA OF NICKEL HYDRIDE.

SADASIVAN SHAJI, JAMES J. O'BRIEN, JOSHUA NUNN, MOYANG LI, ALEX SONG, Department of Chemistry and Center for Molecular Electronics, University of Missouri, St. Louis, MO 63121-4499; LEAH C. O'BRIEN, Department of Chemistry, Southern Illinois University, Edwardsville, IL 62026-1652.

The visible electronic spectrum of the nickel hydride (NiH) is recorded with rotational resolution by intracavity laser absorption spectroscopy (ILS). A dye laser based ILS system is used to record the spectra. The gas phase NiH molecules were produced in an electric discharge using a nickel hollow cathode in a pure hydrogen atmosphere at 2-3 torr total pressure. Transitions are observed from the v=0 X ² Delta _5/2 state to various vibrational levels of several excited states, including the A ² Delta _5/2, B ² Delta _5/2, ² Delta _3/2, and ² Phi _7/2 states. Peak positions for the NiH isotopomers will be presented for transitions involving these levels.