Near-infrared laser spectroscopy of the C-3 Delta-X-3 Delta transition of TiS

The (0, 0), (1, 0), (2, 0), (3, 0), and (4, 0) bands of the C(3)Delta-X(3)D elta transition of TiS, between 743- 863 nm, were studied using the techniq ue of laser vaporization/reaction with supersonic cooling and laser-induced fluorescence (LIF) spectroscopy. The linewidth of the LIF spectrum obtaine d was about 250 MHz. The P, Q, and R branches of each Delta Ohm = 0 subband were observed. A merged least-squares fit of the measured line positions y ielded molecular parameters of the v = 0-4 levels of the C(3)Delta state an d the v = 0 level of the X(3)Delta state. (C) 1999 Academic Press.