Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization.

08:00 EDT 26th October 2018 | BioPortfolio

Summary of "Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization."

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.


Journal Details

This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 173003


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