SPECTROSCOPY OF CRF - EXTENSION OF ROTATIONAL ANALYSIS OF THE A(6)SIGMA(+)-X(6)SIGMA(+) BAND SYSTEM

An extension of the rotational analysis of the A(6) Sigma(+)-X(6) Sigma(+) band system of CrF has been carried out, using new high-resolution data in the 8500-cm(-1) region. The recorded region also includes the B-6 Pi-X(6) Sigma(+) system at 8000 cm(-1). The A(6) Sigma(+)-X(6) Sigma(+) data now include the (0, 2) and(1, 3) bands, as well as fragments of the (2, 4) band. The extended analysis has resulted in a substantially improved set of molecular parameters for the X(6) Sigma(+) state. A previous interpretation of the A(6) Sigma(+)(v = 0) level local perturbation pattern has also been discussed and partly revised. Preliminary parameter; have been determined for the B-6 Pi state through comparisons of synthetically generated B-6 Pi-X(6) Sigma(+) spectra with observed (0, 0) and ( 1, 0) bands of this transition. These parameters indicate that at least a part of the observed local perturbations in the A(6) Sigma(+)(v = 0) level can probably be attributed to interaction with the v = 3 level of the B-6 Pi state. (C) 1995 Academic Press, Inc.