@article{ccd4529782ae4d8d8241306107b8969d,
title = "Revealing the two-electron cusp in the ground states of He and H2 via quasifree double photoionization",
abstract = "We report on kinematically complete measurements and ab initio nonperturbative calculations of double ionization of He and H2 by a single 800 eV circularly polarized photon. We confirm the quasifree mechanism of photoionization for H2 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.",
author = "Sven Grundmann and Serov, {Vladislav V.} and Florian Trinter and Kilian Fehre and Nico Strenger and Andreas Pier and Max Kircher and Daniel Trabert and Miriam Weller and Jonas Rist and Leon Kaiser and Bray, {Alexander W.} and Schmidt, {Lothar Ph H.} and Williams, {Joshua B.} and Till Jahnke and Reinhard D{\"o}rner and Sch{\"o}ffler, {Markus S.} and Kheifets, {Anatoli S.}",
note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",
year = "2020",
month = jul,
doi = "10.1103/PhysRevResearch.2.033080",
language = "English",
volume = "2",
journal = "Physical Review Research",
issn = "2643-1564",
publisher = "American Physical Society",
number = "3",
}