RYDBERG STATES OF BORON HYDRIDE RADICALS BH AND $BH_{2}$.

Abstract

Ionization detected absorption spectra of Rydberg states for BH and $BH_{2}$ will be reported. Boron hydride radicals are produced by ArF (193 nm) photolysis of $B_{2}H_{6}$ (diborane) in a supersonic pulsed-jet. Ions produced by Resonance-Enhanced Multiphoton Ionization are mass selected and detected using a time-of-flight mass spectrometer. Various Rydberg states appearing as resonant features between 370 and 500 nm will be discussed.