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Single photon double ionization of mbox{sffamilybfseries H}_{hbox{sffamilybfseriesfontsize{10}{12}selectfont 2}} by circularly polarized photons at a photon energy of 160 eV |
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| Authors: | K. Kreidi D. Akoury T. Jahnke Th. Weber A. Staudte M. Sch?ffler N. Neumann J. Titze L. Ph.H. Schmidt A. Czasch O. Jagutzki R. A. Costa Fraga R. E. Grisenti R. Díez Mui?o N. A. Cherepkov S. K. Semenov P. Ranitovic C. L. Cocke T. Osipov H. Adaniya J. C. Thompson M. H. Prior A. Belkacem A. Landers H. Schmidt-B?cking R. D?rner |
| Affiliation: | 1. Institut für Kernphysik, University Frankfurt Max von Laue Str. 1, 60438, Frankfurt, Germany 2. DESY, Notkestrasse 85, 22607, Hamburg, Germany 3. Lawrence Berkeley National Lab., Berkeley, CA, 94720, USA 4. Centro de Física de Materiales and Donostia International Physics Center, 20018, San Sebastián, Spain 5. State University of Aerospace Instrumentation, 190000, St. Petersburg, Russia 6. Dept. of Physics, Kansas State Univ, Cardwell Hall Manhattan, KS, 66506, USA 7. Department of Physics, Auburn University, Auburn, AL, 36849, USA |
| Abstract: | We report on fully differential cross sections for double ionization of H2 by a single circularly polarized photon of 160 eV energy. For an unequal sharing of the energy between the two electrons and a particular geometry where the influence of electron/electron interaction is constant, we find a four-lobe structure in the molecular frame angular distribution of the faster electron. This structure is interpreted to be due to a coherent emission of the electron from the two atomic centers of the molecule. This Young-type interference pattern is lost for other geometries, where electron-electron interaction plays a major role. Furthermore, we show that the interference structure depends strongly on the internuclear distance. |
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