Experimental investigation of nondipole effects in photoemission at the Advanced Light Source
Radiation physics and chemistry
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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.
Angular distribution (Nuclear physics); Dipole approximation; Dipole moments; Electron spectroscopy; Photoemission; Synchrotron radiation
Atomic, Molecular and Optical Physics | Inorganic Chemistry | Nuclear | Physical Chemistry
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Lindle, D. W.,
Manson, S. T.
Experimental investigation of nondipole effects in photoemission at the Advanced Light Source.
Radiation physics and chemistry, 73(6),