The D′ → A′ Transition in IBr: A Deperturbation Analysis

High-Resolution Laser Spectroscopy of the A3Π1←X1Σ+ System of IBr with a Titanium:Sapphire Ring Laser

“…We consider that the spin rotational coupling effect between the A and the A state may perturb the vibrational states lower than v = 5 and those higher than v = 20. The RKR potential and the G v values of the A state reported by Radzykewycz et al (14) indicate that the differences between v (A) = 2∼7 and v (A ) = 9∼14 are close to each other with v = 7.…”

Time-resolved imaging of the reaction coordinate

“…The neutral AЈ state potential employed here is generated by the first-order Rydberg-Klein-Rees procedure using the RKR1 program of Le Roy 79 with the parameters from Radzykewycz et al 80 The A , C, and Y states are calculated using the analytical forms of the potential curves determined by Ashfold and co-workers. 81 In examining our timeresolved IBr − data, we follow a similar treatment as in the case of I 2 − .…”

TheD′ ↔ A′Transition in ClF

“…Among the puzzling aspects of the current study that demand explanation is the observation that the DЈ(2) 4 B(7) excitation spectrum of Fig. 3 could not be obtained by pumping the perturbed B (7,14) level, and in fact, could only be obtained by pumping somewhat higher J in B (7). The DЈ (2) and ␤(2) levels are close enough (ϳ10 cm…”

“…Emission spectra were produced and recorded using procedures very much like those described in other recent studies from Vanderbilt (14,17,26). The source was a Tesla discharge, operated in a 7-mm-OD silica tube having a silica window, viewed end-on (27).…”

“…This has rendered the DЈ and AЈ states in most halogens inaccessible via the multistep laser techniques, since these states differ in ⍀ by two from the ground states. Consequently, these transitions have had to be studied through more conventional methods of emission spectroscopy (13,14), augmented recently by methods involving preparation of the AЈ states in a free-jet expansion (15). The emission spectra are typically highly congested, making interpretation difficult.…”