Hemmers O, Guillemin R, Kanter E P, Krässig B, Lindle D W, Southworth S H, Wehlitz R, Baker J, Hudson A, Lotrakul M, Rolles D, Stolte W C, Tran I C, Wolska A, Yu S W, Amusia M Ya, Cheng K T, Chernysheva L V, Johnson W R, Manson S T
Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003, USA.
Phys Rev Lett. 2003 Aug 1;91(5):053002. doi: 10.1103/PhysRevLett.91.053002.
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.