Resonance enhanced multiphoton ionization spectrum of IBr

الملخص EN

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.