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Photoionization studies of the atmospherically important species N and OH at the Elettra synchrotron radiation source

Photoionization studies of the atmospherically important species N and OH at the Elettra synchrotron radiation source
Photoionization studies of the atmospherically important species N and OH at the Elettra synchrotron radiation source
In this paper angularly resolved photoelectron spectra (PES) and constant-ionic-state (CIS) spectra are presented for the atmospherically important species N and OH. The natural width Gamma, line shape parameters q and p(2) and discrete oscillator strengths f have been measured for the members of the N*[2s2p(3)(S-5). np] (P-4) ? N(S-4) autoionizing resonances for n = 5-10. The n = 5 parameters calculated in this work are in good agreement with the values obtained previously whereas for the resonances with n = 6-10 the values of these parameters are reported for the first time. The asymmetry parameter (beta) for the first band of N atoms, the N+(P-3) <-- N(S-4) ionization, has also been measured in the photon energy range of the above autoionizing resonances. For OH, CIS spectra have been recorded for the first photoelectron band corresponding to the ionization OH+(X(3)Sigma(-), v(+) = 0) ?OH(X(2)Pi. v' = 0). In these spectra, rotationally partially resolved bands associated with OH*(a(1)Delta3d, v"= 0) OH(X(2)Pi, v" = 0) resonances have been observed. Suggestions for their assignment are made on the basis of their positions and band simulations which use rotational line strength calculations.
photoionization, synchrotron radiation, reactive species, atmospheric chemistry and physicsresolved photoelectron-spectroscopy, resonance multiphoton ionization, quantum defect analysis, atomic nitrogen, cross-sections, rydbergstates, ground-state, od radicals, oscillator-strengths, absorption
241-252
Innocenti, F.
645ce1e3-45b6-46ed-b842-1054ea7db418
Zuin, L.
fea9c9cf-4524-46de-8ae0-5e744cbf2be9
Costa, M.L.
1dca80c6-c314-453c-b853-382fbeac2770
Dias, A.A.
221a2ab3-3cc5-4635-b9df-bfce6f767364
Morris, A.
378f6b9c-92e7-4783-b7be-cafca74b5372
Paiva, A.C.S.
2592c24d-ba38-4a1c-92c3-83e520b9f3e6
Stranges, S.
c2fdbc8d-800a-4281-b093-e32d818388ca
West, J.B.
1ab6d458-abb8-41a0-b5e9-640ce811c2db
Dyke, J.M.
e71e84eb-0f36-4029-a903-5836062d21b8
Masahiko, Takahashi
83963014-3cb5-419b-89c7-53c0a0636c60
Shunji, Katsumata
f7278353-8ed3-4cf9-adc6-acf21ef8ce1f
Innocenti, F.
645ce1e3-45b6-46ed-b842-1054ea7db418
Zuin, L.
fea9c9cf-4524-46de-8ae0-5e744cbf2be9
Costa, M.L.
1dca80c6-c314-453c-b853-382fbeac2770
Dias, A.A.
221a2ab3-3cc5-4635-b9df-bfce6f767364
Morris, A.
378f6b9c-92e7-4783-b7be-cafca74b5372
Paiva, A.C.S.
2592c24d-ba38-4a1c-92c3-83e520b9f3e6
Stranges, S.
c2fdbc8d-800a-4281-b093-e32d818388ca
West, J.B.
1ab6d458-abb8-41a0-b5e9-640ce811c2db
Dyke, J.M.
e71e84eb-0f36-4029-a903-5836062d21b8
Masahiko, Takahashi
83963014-3cb5-419b-89c7-53c0a0636c60
Shunji, Katsumata
f7278353-8ed3-4cf9-adc6-acf21ef8ce1f

Innocenti, F., Zuin, L., Costa, M.L., Dias, A.A., Morris, A., Paiva, A.C.S., Stranges, S., West, J.B. and Dyke, J.M. , Masahiko, Takahashi and Shunji, Katsumata (eds.) (2005) Photoionization studies of the atmospherically important species N and OH at the Elettra synchrotron radiation source. Journal of Electron Spectroscopy and Related Phenomena. Modern Electron Spectroscopy of Atoms and Molecules. A collection of invited papers dedicated to Professor Katsumi Kimura in recognition of an esteemed research career spanning a 50-year period., 142 (3), 241-252. (doi:10.1016/j.elspec.2004.09.022).

Record type: Article

Abstract

In this paper angularly resolved photoelectron spectra (PES) and constant-ionic-state (CIS) spectra are presented for the atmospherically important species N and OH. The natural width Gamma, line shape parameters q and p(2) and discrete oscillator strengths f have been measured for the members of the N*[2s2p(3)(S-5). np] (P-4) ? N(S-4) autoionizing resonances for n = 5-10. The n = 5 parameters calculated in this work are in good agreement with the values obtained previously whereas for the resonances with n = 6-10 the values of these parameters are reported for the first time. The asymmetry parameter (beta) for the first band of N atoms, the N+(P-3) <-- N(S-4) ionization, has also been measured in the photon energy range of the above autoionizing resonances. For OH, CIS spectra have been recorded for the first photoelectron band corresponding to the ionization OH+(X(3)Sigma(-), v(+) = 0) ?OH(X(2)Pi. v' = 0). In these spectra, rotationally partially resolved bands associated with OH*(a(1)Delta3d, v"= 0) OH(X(2)Pi, v" = 0) resonances have been observed. Suggestions for their assignment are made on the basis of their positions and band simulations which use rotational line strength calculations.

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More information

Published date: 1 March 2005
Keywords: photoionization, synchrotron radiation, reactive species, atmospheric chemistry and physicsresolved photoelectron-spectroscopy, resonance multiphoton ionization, quantum defect analysis, atomic nitrogen, cross-sections, rydbergstates, ground-state, od radicals, oscillator-strengths, absorption

Identifiers

Local EPrints ID: 20832
URI: http://eprints.soton.ac.uk/id/eprint/20832
PURE UUID: b8acdf5c-29f1-4a0f-a5a5-92ee38f4287e

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Date deposited: 01 Mar 2006
Last modified: 15 Jul 2019 19:25

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Contributors

Author: F. Innocenti
Author: L. Zuin
Author: M.L. Costa
Author: A.A. Dias
Author: A. Morris
Author: A.C.S. Paiva
Author: S. Stranges
Author: J.B. West
Author: J.M. Dyke
Editor: Takahashi Masahiko
Editor: Katsumata Shunji

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