✦ LIBER ✦

Double-resonance multiphoton ionisation studies of Franck-Condon disfavoured vibronic levels of the B̃ and C̃ Rydberg states of ammonia

✍ Scribed by J.M. Allen; M.N.R. Ashfold; C.L. Bennett; C.M. Western

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 748 KB
Volume: 149
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)80337-3

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✦ Synopsis

Multiphoton optical-optical double-resonance spectroscopy via predissociating vibronic levels of the A state has been used to reveal hitherto uncharacterised vibrational modes of the B and c' Rydberg states of NH3 and ND,. The modes involved are Y, in the e state and VJ and vq in the B state; we present rotational analyses of ten bands involving these modes. We also describe a method for simulating the double-resonance spectra which takes account of the complications introduced by the short-lived nature of the intermediate state.