Journal article
Electric-octupole and pure-electric-quadrupole effects in soft-X-ray photoemission
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Författarlista: Glans, Peter
Publikationsår: 2000
Startsida: 2116
End page: 2119
Antal sidor: 4
ISSN: 0031-9007
Sammanfattning
Second-order [O(k(2)), k = omega/c] nondipole effects in soft-x-ray photoemission are demonstrated via an experimental and a theoretical study of angular distributions of neon valence photoelectrons in the 100-1200 eV photon-energy range. A newly derived theoretical expression for nondipolar angular distributions characterizes the second-order effects using four new parameters with primary contributions from pure-quadrupole and octupole-dipole interference terms;Independent-particle calculations of these parameters account for a significant portion of the existing discrepancy between experiment and theory for Ne 2p first-order nondipole parameters.
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