Effect of Internal Energy on the Repulsive Coulomb Barrier of Polyanions

Horke, D.A.; Chatterley, A.S.; Verlet, J.R.R.

doi:10.1103/physrevlett.108.083003

Effect of Internal Energy on the Repulsive Coulomb Barrier of Polyanions

Horke, D.A.; Chatterley, A.S.; Verlet, J.R.R.

Authors

D.A. Horke

A.S. Chatterley

Professor Jan Verlet j.r.r.verlet@durham.ac.uk
Professor

Abstract

The nature of the repulsive Coulomb barrier in isolated molecular polyanions is studied by means of the photodetachment dynamics of the S1 excited state of the fluorescein dianion which is bound solely by the repulsive Coulomb barrier. Photoelectron spectra reveal a feature at a constant electron kinetic energy, regardless of the excitation energy. This is explained by using an adiabatic tunneling picture for electron loss through successive repulsive Coulomb barriers correlating to vibrationally excited states. This physical picture is supported by time-resolved photoelectron spectra, showing that the tunneling lifetime is also invariant with excitation energy.

Citation

Horke, D., Chatterley, A., & Verlet, J. (2012). Effect of Internal Energy on the Repulsive Coulomb Barrier of Polyanions. Physical Review Letters, 108(8), Article 083003. https://doi.org/10.1103/physrevlett.108.083003

Journal Article Type	Article
Publication Date	Feb 28, 2012
Deposit Date	May 15, 2013
Publicly Available Date	Feb 5, 2016
Journal	Physical Review Letters
Print ISSN	0031-9007
Electronic ISSN	1079-7114
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	108
Issue	8
Article Number	083003
DOI	https://doi.org/10.1103/physrevlett.108.083003

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