Physical Interpretation of the “Kinetic Energy Release” Effect in the Double Photoionization of H2

T. J. Reddish, J. Colgan, P. Bolognesi, L. Avaldi, M. Gisselbrecht, M. Lavollée, M. S. Pindzola, and A. Huetz
Phys. Rev. Lett. 100, 193001 – Published 14 May 2008

Abstract

A physical interpretation is given for the variation with internuclear separation of the fully differential cross section for double photoionization of H2. This effect is analyzed in a geometry where the fourbody interaction is completely probed. Excellent agreement is found between experiment and time-dependent close-coupling theory after convoluting the latter over the relevant solid angles. We show the observed variations are purely due to the εΣ component of the polarization vector ε along the molecular axis, a conclusion which is supported through calculations of the photoionization of H2+.

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  • Received 25 January 2008

DOI:https://doi.org/10.1103/PhysRevLett.100.193001

©2008 American Physical Society

Authors & Affiliations

T. J. Reddish1, J. Colgan2, P. Bolognesi3, L. Avaldi3, M. Gisselbrecht4, M. Lavollée4, M. S. Pindzola5, and A. Huetz4

  • 1Department of Physics, University of Windsor, 401 Sunset Ave, Ontario, Canada, N9B 3P4
  • 2Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 3CNR-IMIP Area della Ricerca di Roma 1, CP 10 00016 Monterotondo Scalo, Italy
  • 4CNRS-Université Paris Sud, UMR8624, LIXAM, Bat. 350, Centre d’Orsay, 91405, Orsay, France
  • 5Department of Physics, Auburn University, Auburn, Alabama 36849, USA

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Issue

Vol. 100, Iss. 19 — 16 May 2008

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