# PRODUCTION AND CHARACTERIZATION BY LASER SPECTROSCOPY OF FREE RADICALS, MOLECULAR IONS, AND ION CLUSTERS IN A FREE JET EXPANSION

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/29133

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 Title: PRODUCTION AND CHARACTERIZATION BY LASER SPECTROSCOPY OF FREE RADICALS, MOLECULAR IONS, AND ION CLUSTERS IN A FREE JET EXPANSION Creators: Miller, Terry A.; Heaven, M. C.; Bondybey, V. E. Issue Date: 1982 Publisher: Ohio State University Abstract: Free radicals have been produced by excimer laser photolysis of parent molecules seeded in a free jet expansion in an inert gas. Laser induced fluorescence probing of the CN radical produced in this manner yields rotational temperatures from $\sim 4000K$ to $\leq 10K$. This technique clearly provides both a method for studying rotational and vibrational relaxation, as well as a source of ultra-cold free radicals. When fluorobenzene molecules are seeded in the jet, 2-photon photoionization produces the corresponding radical cations. Laser excitation spectra of ultra-cold bare cations and, in addition, ion clusters have been obtained and will be discussed. URI: http://hdl.handle.net/1811/29133 Other Identifiers: 1982-FB-7