1. |
- Derevianko, A, et al.
(author)
-
Electric-octupole and pure-electric-quadrupole effects in soft-X-ray photoemission
- 2000
-
In: Physical Review Letters. - 0031-9007. ; 84:10, s. 2116-2119
-
Journal article (peer-reviewed)abstract
- 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.
|
|