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Vibrational Autoionization in Rydberg States of Ammonia

Journal Article · · Physical Review Letters

Rotationally resolved photoelectron spectroscopy is used to elucidate the mechanism for vibrational autoionization via the nontotally symmetric umbrella vibration of ammonia (NH{sub 3} ). This mechanism depends strongly on the character of the autoionizing level, and the data demonstrate that both the electronic and rotational degrees of freedom can compensate for the change in vibrational symmetry that occurs for odd changes in the quantum number of the umbrella vibration. This result has implications for models of the mode dependence of vibrational autoionization in polyatomic molecules. (c) 2000 The American Physical Society.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL
OSTI ID:
20216613
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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