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Photoelectron spectroscopy of reactive intermediates using synchrotron radiation

Photoelectron spectroscopy of reactive intermediates using synchrotron radiation
Photoelectron spectroscopy of reactive intermediates using synchrotron radiation
Experiments performed with a purpose built spectrometer to study reactive intermediates with synchrotron radiation are described. Results are presented for some short-lived molecules of atmospheric and combustion importance. Constant ionic state (CIS) and photoelectron spectra were recorded. In each case, the observation of resonant structure in the CIS spectrum enabled the identification and characterisation of Rydberg series associated with excited neutral states to be carried out. Examples of window resonances (SO) and possible competition between autoionisation and predissociation (O-2(a(1)Delta(g))) are encountered. Photoelectron spectra recorded at selected resonant energies exhibited extended vibrational structure, which led to improved estimates of ionic state spectroscopic parameters (omega(e), omega(e)x(e)). Franck-Condon calculations for both CIS and PES data provided confirmation of resonant state assignments. Preliminary angular distribution measurements performed on O-2(a(1)Delta(g)) are presented, where the asymmetry parameter (beta) showed structure at energies corresponding to neutral state resonances.
photoelectron spectroscopy, reactive intermediates, synchrotron radiationradiationangular-distribution, molecules, cs+, energy
47-61
Barr, J.D.
c54182e7-c4d4-4161-a42f-1898fd5f8aff
Beeching, L.
d4cc3e8f-b3ca-4570-a091-a249f9b8fb68
De Fanis, A.
8ae9c12d-f352-4a44-9116-346e7a846438
Dyke, J.M.
46393b45-6694-46f3-af20-d7369d26199f
Gamblin, S.D.
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Hooper, N.
ea5d763b-aea5-4deb-919c-e810f3dca647
Morris, A.
378f6b9c-92e7-4783-b7be-cafca74b5372
Stranges, S.
c2fdbc8d-800a-4281-b093-e32d818388ca
West, J.B.
1ab6d458-abb8-41a0-b5e9-640ce811c2db
Wright, A.E.
9e2c6e6a-f478-4571-a1b6-1f76f07efb08
Wright, T.G.
dca2035e-1fe9-4776-9686-6085020fa640
Barr, J.D.
c54182e7-c4d4-4161-a42f-1898fd5f8aff
Beeching, L.
d4cc3e8f-b3ca-4570-a091-a249f9b8fb68
De Fanis, A.
8ae9c12d-f352-4a44-9116-346e7a846438
Dyke, J.M.
46393b45-6694-46f3-af20-d7369d26199f
Gamblin, S.D.
9cfae800-03af-47db-8312-d3ee2dcbd8d7
Hooper, N.
ea5d763b-aea5-4deb-919c-e810f3dca647
Morris, A.
378f6b9c-92e7-4783-b7be-cafca74b5372
Stranges, S.
c2fdbc8d-800a-4281-b093-e32d818388ca
West, J.B.
1ab6d458-abb8-41a0-b5e9-640ce811c2db
Wright, A.E.
9e2c6e6a-f478-4571-a1b6-1f76f07efb08
Wright, T.G.
dca2035e-1fe9-4776-9686-6085020fa640

Barr, J.D., Beeching, L., De Fanis, A., Dyke, J.M., Gamblin, S.D., Hooper, N., Morris, A., Stranges, S., West, J.B., Wright, A.E. and Wright, T.G. (2000) Photoelectron spectroscopy of reactive intermediates using synchrotron radiation. Journal of Electron Spectroscopy and Related Phenomena, 108 (1-3), 47-61. (doi:10.1016/S0368-2048(00)00145-6).

Record type: Article

Abstract

Experiments performed with a purpose built spectrometer to study reactive intermediates with synchrotron radiation are described. Results are presented for some short-lived molecules of atmospheric and combustion importance. Constant ionic state (CIS) and photoelectron spectra were recorded. In each case, the observation of resonant structure in the CIS spectrum enabled the identification and characterisation of Rydberg series associated with excited neutral states to be carried out. Examples of window resonances (SO) and possible competition between autoionisation and predissociation (O-2(a(1)Delta(g))) are encountered. Photoelectron spectra recorded at selected resonant energies exhibited extended vibrational structure, which led to improved estimates of ionic state spectroscopic parameters (omega(e), omega(e)x(e)). Franck-Condon calculations for both CIS and PES data provided confirmation of resonant state assignments. Preliminary angular distribution measurements performed on O-2(a(1)Delta(g)) are presented, where the asymmetry parameter (beta) showed structure at energies corresponding to neutral state resonances.

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More information

Published date: 1 July 2000
Keywords: photoelectron spectroscopy, reactive intermediates, synchrotron radiationradiationangular-distribution, molecules, cs+, energy

Identifiers

Local EPrints ID: 18937
URI: http://eprints.soton.ac.uk/id/eprint/18937
PURE UUID: 45a4d01a-551a-4ec8-ac5e-de2a4053ae50
ORCID for J.M. Dyke: ORCID iD orcid.org/0000-0002-9808-303X

Catalogue record

Date deposited: 19 Jan 2006
Last modified: 16 Mar 2024 02:36

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Contributors

Author: J.D. Barr
Author: L. Beeching
Author: A. De Fanis
Author: J.M. Dyke ORCID iD
Author: S.D. Gamblin
Author: N. Hooper
Author: A. Morris
Author: S. Stranges
Author: J.B. West
Author: A.E. Wright
Author: T.G. Wright

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