Near-Infrared Diode-Laser Spectroscopy of the CCO Radical in the Ã(010)3Delta-;X(010)3Pi(b) Band

The Ã(010)3Delta-;X(010)3Pi(b) band spectrum of the CCO radical has been studied in the region from 11,808 to 11,919 cm-1 by near-infrared diode-laser spectroscopy. A least-squares fit has been made using only part of the observed Ã(010)3Delta-;X(010)3Pi(b) band transitions to obtain molecular constants for the Ã(010)3Delta state, removing transitions with upper levels of irregular behavior. The spin-orbit parameter and the subband origin determined in the present analysis have been discussed in relation to higher order contributions to the Renner-Teller effect. Copyright 1999 Academic Press.