Two visible emission band systems attributed to the ionized molecule Cllf were studied using the second order of a 21-ft concave grating spectrograph (dispersion 1.25 A/mnl). Rotational analyses have been carried out for six bands of system I and six of system 111 for which new vibrational analyses have recently becn proposed by Haranath and Rao. The rotational analyses of the bands of these two systems are consistent with the vibrational assignments. Rotational constants for the upper and lower states of the two systems have been derived. Both the vibrational and rotational analyses of systems I and I11 indicate case (c) 1/2-1/2 and 3/2-3/2 trarlsitions respectively for the two systems. Potential energy curves are drawn for the upper and the lower states of each of the two systenls. The lower states dissociate into a normal CI(lP) + Clf(3P) while the upper states dissociate into a normal CI(ZP) + an excited Clf('D). I t is suggested that the lower state of system 111 is probably the normal statc of Clz+ from theoretical and esperimental evidence.'Manuscript
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