C-12 O-16(2) - A SET OF SPECTROSCOPIC CONSTANTS FROM A SIMULTANEOUS TREATMENT OF ROVIBRATIONAL BANDS AT 4.5 AND 15 MU-M

A set of spectroscopic constants has been obtained using a single weighted least-squares fit involving simultaneously the experimental wavenumbers of the rovibrational lines of C-12 O-16(2) observed at 15 mum and at 4.5 mum, as well as the ''laser difference wavenumbers.'' One hundred thirty-two spectroscopic constants corresponding to 57 vibrational levels or sublevels upsilon1upsilon2lupsilon3 [(2upsilon1 + upsilon2) less-than-or-equal-to 4, upsilon3 less-than-or-equal-to 2] and 51 band centers, have been determined from 4132 observed rovibrational lines, 72 ''laser difference wavenumbers,'' and 40 rovibrational lines belonging to the laser hot band transition 01(1)1 --> (11(1))1, and are reproduced within the respective experimental precisions: typically some 10(-7) cm-1 for laser transitions, some 10(-5) cm-1 for 4.5-mum transitions, and some 10(-4) cm-1 for 15-mum transitions. (C) 1994 Academic Press, Inc.