The resonance enhanced multiphoton ionization (REMPI) spectrum of IBr has been recorded in the region 55 500-62 500 cm-1. In contrast to the homonuclear halogens, where Rydberg transitions dominate the REMPI spectrum, transitions to ion-pair states dominate the spectrum of the interhalogen IBr. Pronounced resonance structure caused by coupling between the b'6 Rydberg state and the ion-pair states was observed. A vibrationally resolved spectrum of the E(0+) ion-pair state was obtained with the aid of jet-cooling. The b6 <-- X Rydberg system was also observed.
|Number of pages||7|
|Journal||Arabian Journal for Science and Engineering|
|Publication status||Published - Apr 1992|