Observation of TiF+by Velocity Modulation Laser Spectroscopy and Analysis of the [17.6]3Δ–X3Φ System

UV Laser Spectroscopy Using the Velocity-Modulation Technique: New Hot Bands of the B2Σ+u–X2Σ+g System of N+2

“…We were therefore able to identify new extra -lines at low J values, for both the (3, 1) and (7,5) bands. These new identifications complete the previous analysis done by Gottscho et al in the visible range (13) for the (3, 5) band and by Klynning and Pagès (15) for the (3,5), (3,6), (7,9), (7,10), and (7,11) bands. In the case of the (5, 3) band, no extra -line was observed and we could not confirm, in the UV range, the presence of the only extra -line reported in the visible by (13).…”

Velocity modulation spectroscopy of molecular ions II: The millimeter/submillimeter-wave spectrum of TiF+ (X3Φr)

“…The rotational spectrum of TiF + was located based on predicted frequencies using the constants of Focsa et al [7], as mentioned. The predictions were found to be accurate to within 120 MHz for all X ladders, indicating the high quality of the optical data.…”

“…In Focsa et al [7,8], TiF 4 was used to produce TiF + . An attempt was made to generate signals of TiF + using this precursor; however, it was not successful.…”

“…This decrease could be explained if TiCl + is created directly from the discharge products of TiCl 4 , and TiF + is formed from the secondary reaction of Ti + and F 2 . Initially a range of 2 GHz was searched in source modulation mode to locate TiF + signals, based on predictions using the constants of Focsa et al [7]. The lowest energy spin component, X = 2, was found and verified by velocity modulation.…”

“…Another ion of interest in this regard is TiF + . The first spectrum of this ion was measured by Focsa et al, who used velocity-modulation laser spectroscopy to record the (17.6) 3 D-X 3 U transition with 0.005 cm À1 resolution [7]. Three DR = 0 subbands were resolved for this transition, and identified as 3 D 1 -3 U 2 , 3 D 2 -3 U 3 , D 3 -3 U 4 .…”