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  Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Wu, J., Magrakvelidze, M., Schmidt, L., Kunitski, M., Pfeifer, T., Schöffler, M., et al. (2013). Understanding the role of phase in chemical bond breaking with coincidence angular streaking. Nature Communications, 4: 2177, pp. 1-6. doi:doi:10.1038/ncomms3177.

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Wu, J.1, 2, Autor
Magrakvelidze, M.3, Autor
Schmidt, L.P.H.1, Autor
Kunitski, M.1, Autor
Pfeifer, T.4, Autor           
Schöffler, M.1, Autor
Pitzer, M.1, Autor
Richter, M.1, Autor
Voss, S.1, Autor
Sann, H.1, Autor
Kim, H.1, Autor
Lower, J.1, Autor
Jahnke, T.1, Autor
Czasch, A.1, Autor
Thumm, U.3, Autor
Dörner, R.1, Autor
Affiliations:
11. Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, D-60438 Frankfurt, Germany, ou_persistent22              
22. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China, ou_persistent22              
33. J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA, ou_persistent22              
4Thomas Pfeifer - Independent Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society, ou_907555              

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 Zusammenfassung: Electron motion in chemical bonds occurs on an attosecond timescale. This ultrafast motion can be driven by strong laser fields. Ultrashort asymmetric laser pulses are known to direct electrons to a certain direction. But do symmetric laser pulses destroy symmetry in breaking chemical bonds? Here we answer this question in the affirmative by employing a two-particle coincidence technique to investigate the ionization and fragmentation of H2 by a long circularly polarized multicycle femtosecond laser pulse. Angular streaking and the coincidence detection of electrons and ions are employed to recover the phase of the electric field, at the instant of ionization and in the molecular frame, revealing a phase-dependent anisotropy in the angular distribution of H+ fragments. Our results show that electron localization and asymmetrical breaking of molecular bonds are ubiquitous, even in symmetric laser pulses. The technique we describe is robust and provides a powerful tool for ultrafast science.

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Sprache(n): eng - English
 Datum: 2013-07-19
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: doi:10.1038/ncomms3177
 Art des Abschluß: -

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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 4 Artikelnummer: 2177 Start- / Endseite: 1 - 6 Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723