Electric-octupole and pure-electric-quadrupole effects in soft-x-ray photoemission
Atomic Physics
2009-10-31 v1
Abstract
Second-order [O(k^2), k=omega/c] nondipole effects in soft-x-ray photoemission are demonstrated via an experimental and 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.
Keywords
Cite
@article{arxiv.physics/9908033,
title = {Electric-octupole and pure-electric-quadrupole effects in soft-x-ray photoemission},
author = {A. Derevianko and O. Hemmers and S. Oblad and P. Glans and H. Wang and S. B. Whitfield and R. Wehlitz and I. A. Sellin and W. R. Johnson and D. W. Lindle},
journal= {arXiv preprint arXiv:physics/9908033},
year = {2009}
}
Comments
4 pages, 3 figures