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Nondipole effects in molecular nitrogen valence shell photoionization

Hemmers, O. and Guillemin, R. and Rolles, D. and Wolska, A. and Lindle, D. W. and Kanter, E. P. and Krässig, B. and Southworth, S. H. and Wehlitz, R. and Langhoff, P. W. and McKoy, V. and Zimmermann, B. (2005) Nondipole effects in molecular nitrogen valence shell photoionization. Journal of Electron Spectroscopy and Related Phenomena, 144-147 . pp. 155-156. ISSN 0368-2048. doi:10.1016/j.elspec.2005.01.246.

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Nondipole photoelectron parameters ζ have been obtained experimentally for the outer-valence 3σ_g, 1π_u and 2σ_u shells in molecular nitrogen from threshold to ∼ 200 eV photon energy. Significant nondipole effects are observed even in the immediate threshold regions of these valence-shell distributions. The results of preliminary calculations for the 3σ_gand 2σ_u clarify the origins of the observed features in terms of contributing molecular symmetry channels. Theory and experiment are in excellent accord, suggesting that the large nondipole effects previously observed in atoms and the K-shells of molecules can also appear at low photon energies in the outer-valence shells of molecules.

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Additional Information:© 2005 Elsevier. Available online 8 March 2005. The ANL group was supported by the Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy, Contract No. W-31-109-Eng-38. The UNLV group acknowledges support by NSF Grant No. PHY-01-40375. B.Z. thanks the Alexander von Humboldt Foundation (Germany) for financial support. We are grateful for the help of the staff of the SRC and the ALS. The University of Wisconsin SRC is supported by NSF Grant No. DMR-0084402, and the ALS (LBNL) was supported by DOE Materials Science Division, BES, OER under Contract No. DE-AC03-76SF00098.
Funding AgencyGrant Number
Department of Energy (DOE)W-31-109-ENG-38
Alexander von Humboldt FoundationUNSPECIFIED
Department of Energy (DOE)DE-AC03-76SF00098
Subject Keywords:Photoionization; Molecules; Nondipolar electron angular distributions; Valence shells
Classification Code:PACS 31.25.Eb; 32.80.Fb
Record Number:CaltechAUTHORS:20151027-154125506
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Official Citation:O. Hemmers, R. Guillemin, D. Rolles, A. Wolska, D.W. Lindle, E.P. Kanter, B. Krässig, S.H. Southworth, R. Wehlitz, P.W. Langhoff, V. McKoy, B. Zimmermann, Nondipole effects in molecular nitrogen valence shell photoionization, Journal of Electron Spectroscopy and Related Phenomena, Volumes 144–147, June 2005, Pages 155-156, ISSN 0368-2048, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61595
Deposited By: George Porter
Deposited On:28 Oct 2015 21:00
Last Modified:10 Nov 2021 22:51

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