# FOURIER TRANSFORM SPECTROSCOPY OF THE $A^{2} \Delta - X^{2}\Pi$ ELECTRONIC TRANSITION OF THE JET COOLED CCl FREE RADICAL

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 dc.creator O'Brien, L. C. en_US dc.creator Brazier, C. R. en_US dc.creator Bernath, P. F. en_US dc.date.accessioned 2006-06-15T18:05:52Z dc.date.available 2006-06-15T18:05:52Z dc.date.issued 1987 en_US dc.identifier 1987-WF-7 en_US dc.identifier.uri http://hdl.handle.net/1811/17409 dc.description Author Institution: Dept. of Chemistry, University of Arizona en_US dc.description.abstract The combination of a free radical jet source and a Fourier transform spectrometer promises to be a very powerful tool in unravelling complex emission spectra. We have observed the rotationally cool (30 K) spectrum of the 0-0 vibrational band of the $A^{2} \Delta - X^{2}\Pi$ electronic transition of CCl. The spectrum was recorded in emission at high resolution (accuracy of $0.004 cm^{-1}$ far the strongest lines) using the Fourier transform spectrometer associated with the McMath Solar Telescope. The CCl radical was produced in a corona excited supersonic expansion in a mixture of $CCl_{4}$ seeded in helium. The first rotational lines of the six strongest branches $(P_{1}, Q_{1,} R_{1}, P_{2}, Q_{2}$ and $R_{2}$) were observed. Transitions in three other branches were also detected $(R_{12}, Q_{21}$ and $R_{21}$), and A-doubling was detected in the $^{2}\Pi_{1/2}$ component of the ground state. the $C^{37}Cl$ isotope structure was only resolved for the $R_{2}$ branch. The spectra obtained and the results of the analysis will be discussed. en_US dc.format.extent 159028 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title FOURIER TRANSFORM SPECTROSCOPY OF THE $A^{2} \Delta - X^{2}\Pi$ ELECTRONIC TRANSITION OF THE JET COOLED CCl FREE RADICAL en_US dc.type article en_US