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A generic π* shape resonance observed in energy-dependent photoelectron angular distributions from two-colour, resonant multiphoton ionization of difluorobenzene isomers

Staniforth, Michael; Daly, Steven; Reid, Katharine L.; Powis, Ivan

Authors

Michael Staniforth

Steven Daly

Katharine L. Reid

Ivan Powis

Abstract

We present new evidence for the existence of a near threshold π* shape resonance as a common feature in the photoionization of each isomer of difluorobenzene. Experimentally this is revealed by significant changes in the anisotropy of the photoelectron angular distributions (PADs) following the ionization of the optically aligned S1 state of these molecules at varying photon energies. Continuum multiple scattering Xα calculations reproduce this behaviour well and allow the visualisation of the continuum shape resonances. The resonances are unusually narrow in energy (

Journal Article Type Article
Journal Journal of Chemical Physics
Print ISSN 0021-9606
Electronic ISSN 0021-9606
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 139
Issue 6
Article Number 064304
Institution Citation Staniforth, M., Daly, S., Reid, K. L., & Powis, I. A generic π* shape resonance observed in energy-dependent photoelectron angular distributions from two-colour, resonant multiphoton ionization of difluorobenzene isomers. Journal of Chemical Physics, 139(6), doi:10.1063/1.4817324
DOI https://doi.org/10.1063/1.4817324
Publisher URL http://scitation.aip.org/content/aip/journal/jcp/139/6/10.1063/1.4817324
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0




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