ZEEMAN SPECTROSCOPY OF THE LOWEST TRIPLET STATE OF TETRAMETHYL-1, 3-CYCLOBUTANEDITHIONE (TMCBDT)

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 Title: ZEEMAN SPECTROSCOPY OF THE LOWEST TRIPLET STATE OF TETRAMETHYL-1, 3-CYCLOBUTANEDITHIONE (TMCBDT) Creators: Baiardo, Joseph; Vala, Martin; Trabjerg, I. Issue Date: 1982 Publisher: Ohio State University Abstract: The analysis of high field pulsed Zeeman absorption spectra of the 594.3nm $^{3}A_{u}\leftarrow ^{1}A_{g}$ band of single crystal TMCBDT confirms that only one spin-orbit routs is active. Intensity is thus expected to be polarized solely along the C-S bonds, as $observed.^{1}$ Fitting of the field dependent measurements to a model including variable field and polarization directions with respect to the crystal axes has revealed the presence of a zero-field splitting of $1-3 cm^{-1}$. This cannot be observed directly, however, because only one of the triplet sublevels has an appreciable transition moment amplitude in zero-field. Calculation of predicted Zeeman intensity ration corroborate the above findings. Description: $^{1}$Ib Trabjerg, J. Baiardo and M. Vala, Thirty-Fourth Symposium on Molecular Spectroscopy, Columbus, 1979, Paper NG13. URI: http://hdl.handle.net/1811/29051 Other Identifiers: 1982-FC-2