Observation of Ω = 1/2 States in NiH Through Collisionally Induced Fluorescence

Details Observation of Ω = 1/2 States in NiH Through Collisionally Induced Fluorescence Observation of Ω = 1/2 States in NiH Through Collisionally Induced Fluorescence

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mss..confewg02r&link_type=abstract

"International Symposium On Molecular Spectroscopy, 66th Meeting, Held 20-24 June, 2011 at Ohio State University. http://molspec

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Fourier transform spectra of collisionally induced fluorescence following isotopically selective laser excitation of NiH at ˜ 550 nm has allowed us to locate an exited Ω' = 1/2 state of NiH lying 17900 Cm-1 above the electronic ground state. We identify this as v = 0 of a ^2Π1/2 state, originating from the Ni^+ 3d^84s^1 ^2F configuration, from the ab initio studies published by Zou and Liu in 2007. Emission from the [17.9]0.5 state occurs to v''= 0 and 1 of the ^2Σ^+ and ^2 Π1/2 low-lying ligand field states, locating hitherto elusive ^2 Π1/2 f parity levels to within 0.01 Cm-1. Collisionally induced fluorescence following laser excitation at lower energies has been recorded in the presence of a magnetic field (0.7 - 1 Tesla), at Doppler resolution. The partially resolved Zeeman patterns have been used to derive effective Landé factors g_J for the v=0 and 1 levels of the low-lying Ω'' = 5/2 and 3/2 states ({^2Δ} and ^2Π states from Ni^+ 3d^9). These are compared with predictions from a revised fit of zero-field energy levels, now including the new observations concerning the Ω'' = 1/2 states.
W.L. Zou, W.J. Liu. J. Comp. Chem. 28 (2007) 2286-98

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