Rao, R. M. and Poliakoff, E. D. and Wang, Kwanghsi and McKoy, V. (1996) Global Franck-Condon breakdown resulting from Cooper minima. Physical Review Letters, 76 (15). pp. 2666-2669. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:RAOprl96
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Using N2 2σu-1 photoionization as an example, we present the first measurements and calculations of photoion vibrational distributions for an extended energy range ( 5≤Ek≤230 eV). The results show a striking breakdown of the Franck-Condon approximation over a 100 eV range. We show that this coupling between vibrational and electronic motion arises from a dependence of Cooper minima on molecular bond length. Based on this mechanism, the effect is expected to be common for molecular systems.
|Additional Information:||©1996 The American Physical Society. Received 1 December 1995. We thank the CAMD staff for assistance. E.D.P. acknowledges support from the NSF (CHE-9315857) and the Louisiana LEQSF program. Work at Caltech was supported by the Air Force Office of Scientific Research, the Office of Health and Environmental Research of the U.S. Department of Energy, and the JPL/Caltech CRAY Y-MP2E/232 Supercomputer.|
|Subject Keywords:||MOLECULAR PHOTOIONIZATION; SPECTROSCOPY; STATES|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||19 Dec 2006|
|Last Modified:||26 Dec 2012 09:24|
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