High resolution spectroscopy of the Vanadium oxide B⁴ [pi] -X⁴ [sigma] ⁻ (0,0) Band

The B⁴Π—X⁴Σ⁻ (0,0) band of VO has been recorded at sub-Doppler resolution by intermodulated fluorescence spectroscopy. Spectral linewidths of 60 MHz were typical; which enabled the hyperfine structure due to the ⁵¹V nucleus (I = 7/2) to be resolved for most of the observed branches. The hyperfine structure of the B⁴Π state is narrow except where it is heavily perturbed by the v = 2 level of the a²Σ⁺ state. The electron configuration of the a²Σ⁺ state was determined to be (4sσ)¹(3dδ)² because of the large Fermi contact interaction which arose from an unpaired electron having primarily metal 4s atomic orbital character. The transition frequencies were fit to a model which included the rotational, fine and hyperfine structure of the B⁴Π, X⁴Σ⁻, and a²Σ⁺ states. The B⁴Π / a²Σ⁺ interaction required the inclusion of an effective higher order spin-orbit parameter as well as a new hyperfine parameter, denoted by parameter e. The new hyperfine parameter is required to describe the hyperfine interactions between ⁴Π and ²Σ⁺ states. The fit included 3211 data points and gave an r.m.s. error of 0.00038 cm⁻¹.

Name thesis:degree_name

Master of Science - MSc

Level thesis:degree_level

master's

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher

University of British Columbia

Year dc:date

1992

Author dc:creator

• Berno, Bob

Statement dc:rights

• For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.

Language dc:language

eng

Handle dc:identifier

http://hdl.handle.net/2429/1115

OAI identifier oai:identifier

oai:circle.library.ubc.ca:2429/1115