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Revealing the two-electron cusp in the ground states of He and H2 via quasifree double photoionization

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Date

2020

Authors

Grundmann, S
Serov, V V
Trinter, Florian
Fehre, Kilian
Strenger, Nico
Pier, Andreas
Kircher, Max
Trabert, Daniel
Weller, Miriam
Rist, Jonas

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

We report on kinematically complete measurements and ab initio nonperturbative calculations of double ionization of He and H 2 by a single 800 eV circularly polarized photon. We confirm the quasifree mechanism of photoionization for H 2 and show how it originates from the two-electron cusp in the ground state of a two-electron target. Our approach establishes a method for mapping electrons relative to each other and provides valuable insight into photoionization beyond the electric-dipole approximation.

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Keywords

Citation

URI

http://hdl.handle.net/1885/262151

Collections

ANU Research Publications

Source

Physical Review Research

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

Creative Commons Attribution 4.0 International license

DOI

10.1103/PhysRevResearch.2.033080

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