Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light
Electron–nuclei coupling accompanying excitation and relaxation processes is a fascinating phenomenon in molecular dynamics. A striking and unexpected example of such coupling is presented here in the context of photoelectron circular dichroism measurements on randomly oriented, chiral methyloxirane...
| Main Authors: | , , , |
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| Format: | Article |
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Nature Publishing Group
2013
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| Online Access: | https://eprints.nottingham.ac.uk/2719/ |
| _version_ | 1848790858378248192 |
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| author | Garcia, Gustavo A. Nahon, Laurent Daly, Steven Powis, Ivan |
| author_facet | Garcia, Gustavo A. Nahon, Laurent Daly, Steven Powis, Ivan |
| author_sort | Garcia, Gustavo A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Electron–nuclei coupling accompanying excitation and relaxation processes is a fascinating phenomenon in molecular dynamics. A striking and unexpected example of such coupling is presented here in the context of photoelectron circular dichroism measurements on randomly oriented, chiral methyloxirane molecules, unaffected by any continuum resonance. Here, we report that the forward-backward asymmetry in the electron angular distribution, with respect to the photon axis, which is associated with photoelectron circular dichroism can surprisingly reverse direction according to the ion vibrational mode excited. This vibrational dependence represents a clear breakdown of the usual Franck–Condon assumption, ascribed to the enhanced sensitivity of photoelectron circular dichroism (compared with other observables like cross-sections or the conventional anisotropy parameter-β) to the scattering phase off the chiral molecular potential, inducing a dependence on the nuclear geometry sampled in the photoionization process. Important consequences for the interpretation of such dichroism measurements within analytical contexts are discussed. |
| first_indexed | 2025-11-14T18:19:17Z |
| format | Article |
| id | nottingham-2719 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:19:17Z |
| publishDate | 2013 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-27192020-05-04T16:38:06Z https://eprints.nottingham.ac.uk/2719/ Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light Garcia, Gustavo A. Nahon, Laurent Daly, Steven Powis, Ivan Electron–nuclei coupling accompanying excitation and relaxation processes is a fascinating phenomenon in molecular dynamics. A striking and unexpected example of such coupling is presented here in the context of photoelectron circular dichroism measurements on randomly oriented, chiral methyloxirane molecules, unaffected by any continuum resonance. Here, we report that the forward-backward asymmetry in the electron angular distribution, with respect to the photon axis, which is associated with photoelectron circular dichroism can surprisingly reverse direction according to the ion vibrational mode excited. This vibrational dependence represents a clear breakdown of the usual Franck–Condon assumption, ascribed to the enhanced sensitivity of photoelectron circular dichroism (compared with other observables like cross-sections or the conventional anisotropy parameter-β) to the scattering phase off the chiral molecular potential, inducing a dependence on the nuclear geometry sampled in the photoionization process. Important consequences for the interpretation of such dichroism measurements within analytical contexts are discussed. Nature Publishing Group 2013-07-05 Article PeerReviewed Garcia, Gustavo A., Nahon, Laurent, Daly, Steven and Powis, Ivan (2013) Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light. Nature Communications, 4 (2132). 2132/1-2132/6. ISSN ESSN: 2041-1723 http://www.nature.com/ncomms/2013/130705/ncomms3132/full/ncomms3132.html#methods doi:10.1038/ncomms3132 doi:10.1038/ncomms3132 |
| spellingShingle | Garcia, Gustavo A. Nahon, Laurent Daly, Steven Powis, Ivan Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| title | Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| title_full | Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| title_fullStr | Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| title_full_unstemmed | Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| title_short | Vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| title_sort | vibrationally induced inversion of photoelectron forward-backward asymmetry in chiral molecule photoionization by circularly polarized light |
| url | https://eprints.nottingham.ac.uk/2719/ https://eprints.nottingham.ac.uk/2719/ https://eprints.nottingham.ac.uk/2719/ |