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dc.creatorHong, Hwei-Kwanen_US
dc.creatorJacobsen, Clayton W.en_US
dc.date.accessioned2006-06-15T13:53:00Z
dc.date.available2006-06-15T13:53:00Z
dc.date.issued1977en_US
dc.identifier1977-FA-6en_US
dc.identifier.urihttp://hdl.handle.net/1811/9973
dc.descriptionAuthor Institution: Radiation Laboratory University of Notre Dameen_US
dc.description.abstractThe resonant Raman effect of pyrazine was studied quantitatively with tunable UV lasers at liquid helium temperature. Solid solutions of pyrazine in benzene with various concentrations (3% to 0.1%) were used. Using the 990 $cm^{-1}$ benzene vibration as reference, the excitation profiles of Raman intensities for $\nu _{1}, \nu_{9}, \nu_{6a},$ and $\nu _{10a}$ were determined. It was found that both $\nu_{6a}$ and $\nu_{10a}$ are enhanced by a factor of $10^{6}$. The functional dependence is quite different for different vibrations, e.g., $\nu _{6a}$ shows a $(\Delta E)^{-2}$ dependence $(\Delta E $ is the difference between the excitation energy and the resonance), whereas, $\nu_{10a}$ shows a $(\Delta E)^{-4}$ dependence off resonance and a $(\Delta E)^{-1}$ dependence near resonance. Existing theories by Albrecht, Peticolas, etc., would predict $(\Delta E)^{-4}$ off resonance and $(\Delta E)^{-2}$ near resonance for $\nu_{10a}$ and $(\Delta E)^{-4}$ for $\nu_{6a}$ throughout.en_US
dc.format.extent133120 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleQUANTITATIVE STUDY OF EXCITATION PROFILES OF TOTALLY SYMMETRIC AND NONTOTALLY SYMMETRIC VIBRATIONS OP PYRAZINE WITH TUNABLE UV LASERS--A CRITICAL EXAMINATION OF VARIOUS THEORIES OF RAMAN INTENSITIESen_US
dc.typearticleen_US


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