The emission spectrum of the C-X system of the InCl molecule was photographed in the third order of a 10.6m concave grating spectrograph at a reciprocal dispersion of 0.22 Å mm-1and a resolution ∼ 0.005 Å. The (0, 0) and (0, 1) bands were resolved and the rotational analyses of these bands have been carried out. Precise rotational constants were calculated from direct least square fitting to the measured line positions of each band. The Λ-doubling constant in the C1Π state is found to be negligible (105cm-1). Rotational predissociation has been observed at J = 73 in the ν=0 level of the C state for the first time. The upper limit of the dissociation energy is found to be ∼37565 cm-1. Franck-Condon factors and r-centroids of the bands and potential energy curves of the combining states were determined. © 1986.
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