SPECTROSCOPIC CHARACTERIZATION OF THE ASF2 RADICAL

The electronic spectrum of the AsF2 radical was observed between 330 a nd 380 nm using one-color, mass-resolved, 2+1 resonance enhanced multi photon ionization (REMPI) spectroscopy. The spectrum arises from two-p hoton resonances with the (F) over tilde (T-0=54 355 +/- 15 cm(-1), nu (1)' = 813 +/- 6 cm(-1), and nu(2)' = 308 +/- 5 cm(-1)) and (H) over t ilde(T-0=57 480 +/- 15 cm(-1), nu(1)' = 810 +/- 10 cm(-1), and nu(2)' = 310 +/- 20 cm(-1)), Rydberg states. A third photon ionized the radic als. The REMPI spectrum exhibits vibrational hot bands that give spect roscopic constants for 4sF(2) ((X) over tilde B-2(1)) of nu(1) ''=705 +/- 10 cm(-1) and nu(2) '' = 285 +/- 10 cm(-1). Solutions of the Rydbe rg equation indicate that plausible assignments for the (F) over tilde and (H) over tilde states are limited to the set of 4d and 5p Rydberg states.