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dc.creatorLee, Y. S.en_US
dc.creatorMills, James W.en_US
dc.date.accessioned2006-06-15T17:13:53Z
dc.date.available2006-06-15T17:13:53Z
dc.date.issued1974en_US
dc.identifier1974-RH-8en_US
dc.identifier.urihttp://hdl.handle.net/1811/16394
dc.description$^{1}$R. N. Zare, Accounts of Chemical Research 4, 361 (1971).en_US
dc.descriptionAuthor Institution: Department of Chemistry, Drew Universityen_US
dc.description.abstractFluorescence from low pressure benzene vapor was observed to be plane polarized when excited with polarised 253.7 nm radiation. Fluorescence at 261.7 nm, observed under low resolution (1.1 am bandwidth), exhibits a degree of polarization ($I_\parallel - I_\bot)/(I_\parallel + I_\bot$) of approximately 1/7 upon extrapolation to zero benzene pressure. Collisiona1 reorientation reduces the degree of polarisation Co one half the zero pressure value at 0.3 Torr benzene pressure. Collisions causing vibrationa1 relaxation in the $^{1}B_{2u}$ state cause reorientation. Exploratory experiments indicate that an externally applied magnetic field causes a change in the angular distribution of the fluorescence intensity at 261.7 nm. The fluorescence was excited from a direction perpendicular to the magnetic field and detected along the field direction. As the field was scanned between 0 - 2000 Gauss, the fluorescence intensity followed a pattern suggesting that interference effects exist among magnetic sublevels of the excited vibronic $state.^{1}$ Since the entire pattern was not observable with our magnet, the number of components, their spacings and widths and the high-field intensity limit necessary for complete interpretation cannot he obtained from our exploratory work. Acknowledgement Is made to the donors of the Petroleum Research Fund, administered by the American Chemical Society, for partial support of this research.en_US
dc.format.extent257684 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titlePLANE POLARIZATION AND MAGNETIC INTERFERENCE EFFECTS IN BENZENE VAPOR FLUORESCENCEen_US
dc.typearticleen_US


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