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Photoelectron spectroscopy of atomic oxygen using the Elettra synchrotron source

Photoelectron spectroscopy of atomic oxygen using the Elettra synchrotron source
Photoelectron spectroscopy of atomic oxygen using the Elettra synchrotron source
Atomic oxygen has been studied using angle resolved photoelectron spectroscopy (PES) and constant-ionic-state (CIS) measurements using radiation from the Elettra synchrotron as the photon source. Relative partial photoionization cross-sections and angular distributions for the O+(S-4) ? O(P-3) and O+(D-2) ? O(P-3) ionizations have been measured as a function of photon energy from threshold (13.6 eV) to 19.0 eV. Comparison of the results obtained with recent experimental work performed at lower resolution reveals a number of differences and comparison with results of recent calculations shows the need for the inclusion of coupling intermediate between the j-j and L-S limits in future calculations of photoionization cross-sections and angular distributions. This work has demonstrated the feasibility of and results to be expected from angle resolved PES and CIS measurements on reactive intermediates at Elettra, a third-generation synchrotron source, and further studies on small molecular radicals are proposed.
angular-distributions, cross-sections, branching ratios, photoionization, photoionisation
0026-8976
575-582
Beeching, L.J.
d37cfd41-d885-4dea-a860-6c2013f6d304
Dias, A.A.
221a2ab3-3cc5-4635-b9df-bfce6f767364
Dyke, J.M.
46393b45-6694-46f3-af20-d7369d26199f
Morris, A.
378f6b9c-92e7-4783-b7be-cafca74b5372
Stranges, S.
c2fdbc8d-800a-4281-b093-e32d818388ca
West, J.B.
1ab6d458-abb8-41a0-b5e9-640ce811c2db
Zema, N.
fd4e1724-3a61-4d22-b24a-7c04ce831403
Zuin, L.
fea9c9cf-4524-46de-8ae0-5e744cbf2be9
Beeching, L.J.
d37cfd41-d885-4dea-a860-6c2013f6d304
Dias, A.A.
221a2ab3-3cc5-4635-b9df-bfce6f767364
Dyke, J.M.
46393b45-6694-46f3-af20-d7369d26199f
Morris, A.
378f6b9c-92e7-4783-b7be-cafca74b5372
Stranges, S.
c2fdbc8d-800a-4281-b093-e32d818388ca
West, J.B.
1ab6d458-abb8-41a0-b5e9-640ce811c2db
Zema, N.
fd4e1724-3a61-4d22-b24a-7c04ce831403
Zuin, L.
fea9c9cf-4524-46de-8ae0-5e744cbf2be9

Beeching, L.J., Dias, A.A., Dyke, J.M., Morris, A., Stranges, S., West, J.B., Zema, N. and Zuin, L. (2003) Photoelectron spectroscopy of atomic oxygen using the Elettra synchrotron source. Molecular Physics, 101 (4-5), 575-582.

Record type: Article

Abstract

Atomic oxygen has been studied using angle resolved photoelectron spectroscopy (PES) and constant-ionic-state (CIS) measurements using radiation from the Elettra synchrotron as the photon source. Relative partial photoionization cross-sections and angular distributions for the O+(S-4) ? O(P-3) and O+(D-2) ? O(P-3) ionizations have been measured as a function of photon energy from threshold (13.6 eV) to 19.0 eV. Comparison of the results obtained with recent experimental work performed at lower resolution reveals a number of differences and comparison with results of recent calculations shows the need for the inclusion of coupling intermediate between the j-j and L-S limits in future calculations of photoionization cross-sections and angular distributions. This work has demonstrated the feasibility of and results to be expected from angle resolved PES and CIS measurements on reactive intermediates at Elettra, a third-generation synchrotron source, and further studies on small molecular radicals are proposed.

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More information

Published date: 2003
Keywords: angular-distributions, cross-sections, branching ratios, photoionization, photoionisation

Identifiers

Local EPrints ID: 19905
URI: http://eprints.soton.ac.uk/id/eprint/19905
ISSN: 0026-8976
PURE UUID: caa58c83-93d7-44fc-9464-8a5e1fd48692
ORCID for J.M. Dyke: ORCID iD orcid.org/0000-0002-9808-303X

Catalogue record

Date deposited: 23 Feb 2006
Last modified: 09 Jan 2022 02:35

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Contributors

Author: L.J. Beeching
Author: A.A. Dias
Author: J.M. Dyke ORCID iD
Author: A. Morris
Author: S. Stranges
Author: J.B. West
Author: N. Zema
Author: L. Zuin

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