Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization
Atomic Physics
2018-10-31 v2
Abstract
We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new insight into the nature of the quasifree mechanism.
Cite
@article{arxiv.1803.10841,
title = {Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization},
author = {S. Grundmann and F. Trinter and A. W. Bray and S. Eckart and J. Rist and G. Kastirke and D. Metz and S. Klumpp and J. Viefhaus and L. Ph. H. Schmidt and J. B. Williams and R. Dörner and T. Jahnke and M. S. Schöffler and A. S. Kheifets},
journal= {arXiv preprint arXiv:1803.10841},
year = {2018}
}
Comments
5 Pages, 3 Figures