dc.creator Bondybey, V. E. en_US dc.creator Miller, Terry A. en_US dc.date.accessioned 2006-06-15T14:05:04Z dc.date.available 2006-06-15T14:05:04Z dc.date.issued 1978 en_US dc.identifier 1978-RF-06 en_US dc.identifier.uri http://hdl.handle.net/1811/10523 dc.description Author Institution: Bell Telephone Laboratories en_US dc.description.abstract Ground state $X^{2} \Sigma^{+}\; CO^{+}$ molecular ions have been produced in a thermal He bath by Penning ionization of CO by He metastables. Specific rovibronic levels of the $A^{2} \Pi$ state of $CO^{+}$ have been excited by a tunable dye laser. Observation of the time-resolved laser-induced fluorescence allows the determination of the upper level lifetime as a function of He pressure. Radiative lifetimes and cross-sections for radiationless relaxation via He-$CO^{+}$ collisions are deduced for the v = 0-3 levels. The cross-sections are surprisingly large. Observations of laser-induced fluorescence from levels other than that initially excited indicates that relaxation between adjacent vibrational levels of the $A^{2}\Pi$ state is not direct. It is postulated that it may involve high vibrational levels of the ground $X^{2} \Sigma^{+}$ state. en_US dc.format.extent 96376 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title VIBRATIONAL RELAXATION IN THE $CO^{+}$ MOLECULAR ION en_US dc.type article en_US
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