Experimental Investigation of Nondipole Effects in Photoemission at the Advanced Light Source

Authors

Renaud Guillemin, CNRS, Laboratoire de Chimie Physique-Matière et RayonnementFollow
Oliver Hemmers, University of Nevada, Las VegasFollow
Dennis W. Lindle, University of Nevada, Las VegasFollow
S. T. Manson, Georgia State UniversityFollow

Document Type

Article

Publication Date

8-2005

Publication Title

Radiation physics and chemistry

Publisher

Elsevier

Volume

73

Issue

6

First page number:

311

Last page number:

327

Abstract

Breakdowns in the dipole approximation in the soft-X-ray photon-energy range (hv < 5 keV) were first observed 30 years ago and have been studied theoretically for many years. However, only recently their significance at low energies has been appreciated when advances in gas-phase-photoemission experiments using synchrotron radiation began to highlight numerous examples of significant nondipole effects at photon energies as low as tens of eV. In a previous publication [Hemmers et al., 2004a. Radiat. Phys. Chem. 70, 123–147], we presented a description of the recent advances made in the investigation of nondipole effects in photoionization from an experimental perspective. In this article, we report the results obtained by the X-ray atomic and molecular spectroscopy (XAMS) group at the Advanced Light Source, over the last 10 years, on the limits of the dipole approximation, probed by angle-resolved photoelectron spectroscopy for atoms and molecules in gas phase.

Controlled Subject

Angular distribution (Nuclear physics); Dipole moments; Photoemission

Disciplines

Atomic, Molecular and Optical Physics | Inorganic Chemistry | Nuclear | Physical Chemistry

Language

English

Permissions

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Rights

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Repository Citation

Guillemin, R., Hemmers, O., Lindle, D. W., Manson, S. T. (2005). Experimental Investigation of Nondipole Effects in Photoemission at the Advanced Light Source. Radiation physics and chemistry, 73(6), 311-327.