Infrared-infrared double resonance spectroscopy of Ar-HF. Intermolecular state dependence of the dipole moment and vibrational predissociation in vHF = 2

✍ Scribed by P.A. Block; R.E. Miller

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 761 KB
• Volume: 226
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)00711-x

✦ Synopsis

Stark spectra have been measured for Ar-HF in several excited intermolecular bending and stretching states associated with urrr= 1. The resulting dipole moments are compared with those calculated using the most recent potential energy surface. Infrared-infrared double resonance spectroscopy is used to access the corresponding states in %=2 where, in the absence of intermolecular excitation, dissociation occurs before the molecules can reach the detector. Simultaneous excitation of the Z or II bending vibrations, which have the effect of making the hydrogen atom point away from argon atom on average, results in lifetimes in excess of the molecular flight time (0.3 ms).