AIP Conference Proceedings
American Institute of Physics
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Over the past two decades, the dipole approximation has facilitated a basic understanding of the photoionization process in atoms and molecules. Recent experiments on the 1s inner shells of small molecules at relatively low photon energies (⩽ 1000 eV) show strong nondipole effects. They are significant and measurable at energies close to threshold, in conflict with a common assumption that the dipole approximation is valid for photon energies below 1 keV.
Carbon compounds; Angular distribution (Nuclear physics); Dipole moments; Electron spectroscopy; Photoionization; Photon-molecule collisions
Atomic, Molecular and Optical Physics | Physical Chemistry
Copyright (2000) 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.
Lindle, D. W.,
Sellin, I. A.,
Mills, J. D.,
Sheehy, J. A.,
Langhoff, P. W.
Beyond the Dipole Approximation: Angular-Distribution Effects in the 1s Photoemission from Small Molecules.
AIP Conference Proceedings, 500