Document Type
Conference Proceeding
Publication Date
2001
Publication Title
AIP Conference Proceedings
Publisher
American Institute of Physics
Volume
576
First page number:
189
Last page number:
192
Abstract
Over the past three decades, the dipole approximation has facilitated a basic understanding of the photoionization process in atoms and molecules. Advances in gas-phase photoemission experiments using synchrotron radiation have recently highlighted nondipole effects at relatively low photon energies while probing the limits of the dipole approximation. Breakdowns in this approximation are manifested primarily as deviations from dipolar angular distributions of photoelectrons. Detailed new results demonstrate nondipolar angular-distribution effects are easily observable in atomic gases at energies well below 1 keV, and, in molecules, a previously unexpected phenomenon greatly enhances the breakdown of the dipole approximation just above the core-level ionization threshold.
Controlled Subject
Dipole moments; Electron spectroscopy; Photoionization; Ultraviolet spectra
Disciplines
Atomic, Molecular and Optical Physics | Physical Chemistry
File Format
File Size
1100 KB
Language
English
Permissions
Copyright (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Rights
IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/
Repository Citation
Hemmers, O.,
Lindle, D. W.
(2001).
Photoelectron Spectroscopy and the Dipole Approximation.
AIP Conference Proceedings, 576
189-192.
https://digitalscholarship.unlv.edu/hrc_fac_articles/59
Comments
Presented at: The Sixteenth International Conference on the Application of Accelerators in Research and Industry (CAARI), Denton, TX, USA, November 1-4, 2000
Also published in:
Advanced Light Source Compendium of User Abstracts and Technical Reports 1993-1996, April 1997, p. 224