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Dramatic nondipole effects in low-energy photoionization: experimental and theoretical study of Xe 5s
O Hemmers1, R Guillemin, E P Kanter
1Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003, USA.
Physical Review Letters
|August 9, 2003
Abstract:
The Xe 5s nondipole photoelectron parameter gamma is obtained experimentally and theoretically from threshold to approximately 200 eV photon energy. Significant nondipole effects are seen even in the threshold region of this valence shell photoionization. In addition, contrary to previous understanding, clear evidence of interchannel coupling among quadrupole photoionization channels is found.