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Horke DA, Chatterley AS, Verlet JR. Effect of internal energy on the repulsive Coulomb barrier of polyanions. Phys Rev Lett. 2012;108(8):083003doi: 10.1103/PhysRevLett.108.083003.
Horke, D. A., Chatterley, A. S., & Verlet, J. R. (2012). Effect of internal energy on the repulsive Coulomb barrier of polyanions. Physical review letters, 108(8), 083003. https://doi.org/10.1103/PhysRevLett.108.083003
Horke, Daniel A, et al. "Effect of internal energy on the repulsive Coulomb barrier of polyanions." Physical review letters vol. 108,8 (2012): 083003. doi: https://doi.org/10.1103/PhysRevLett.108.083003
Horke DA, Chatterley AS, Verlet JR. Effect of internal energy on the repulsive Coulomb barrier of polyanions. Phys Rev Lett. 2012 Feb 24;108(8):083003. doi: 10.1103/PhysRevLett.108.083003. Epub 2012 Feb 24. PMID: 22463527.
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Phys Rev Lett. 2012 Feb 24;108(8):083003. doi: 10.1103/PhysRevLett.108.083003. Epub 2012 Feb 24.

Effect of internal energy on the repulsive Coulomb barrier of polyanions.

Physical review letters

Daniel A Horke, Adam S Chatterley, Jan R R Verlet

Affiliations

  1. Department of Chemistry, University of Durham, Durham, United Kingdom.

PMID: 22463527 DOI: 10.1103/PhysRevLett.108.083003

Abstract

The nature of the repulsive Coulomb barrier in isolated molecular polyanions is studied by means of the photodetachment dynamics of the S(1) 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.

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