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Imaging an isolated water molecule using a single electron wave packet.
Liu, Xinyao; Amini, Kasra; Steinle, Tobias; Sanchez, Aurelien; Shaikh, Moniruzzaman; Belsa, Blanca; Steinmetzer, Johannes; Le, Anh-Thu; Moshammer, Robert; Pfeifer, Thomas; Ullrich, Joachim; Moszynski, Robert; Lin, C D; Gräfe, Stefanie; Biegert, Jens.
Afiliación
  • Liu X; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
  • Amini K; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
  • Steinle T; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
  • Sanchez A; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
  • Shaikh M; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
  • Belsa B; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
  • Steinmetzer J; Institute of Physical Chemistry, Friedrich-Schiller University, 07743 Jena, Germany.
  • Le AT; Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
  • Moshammer R; Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany.
  • Pfeifer T; Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany.
  • Ullrich J; Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany.
  • Moszynski R; Department of Chemistry, University of Warsaw, 02-093 Warsaw, Poland.
  • Lin CD; Abbe Center of Photonics, Friedrich-Schiller University, 07745 Jena, Germany.
  • Gräfe S; Institute of Physical Chemistry, Friedrich-Schiller University, 07743 Jena, Germany.
  • Biegert J; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
J Chem Phys ; 151(2): 024306, 2019 Jul 14.
Article en En | MEDLINE | ID: mdl-31301712
Observing changes in molecular structure requires atomic-scale Ångstrom and femtosecond spatio-temporal resolution. We use the Fourier transform (FT) variant of laser-induced electron diffraction (LIED), FT-LIED, to directly retrieve the molecular structure of H2O+ with picometer and femtosecond resolution without a priori knowledge of the molecular structure nor the use of retrieval algorithms or ab initio calculations. We identify a symmetrically stretched H2O+ field-dressed structure that is most likely in the ground electronic state. We subsequently study the nuclear response of an isolated water molecule to an external laser field at four different field strengths. We show that upon increasing the laser field strength from 2.5 to 3.8 V/Å, the O-H bond is further stretched and the molecule slightly bends. The observed ultrafast structural changes lead to an increase in the dipole moment of water and, in turn, a stronger dipole interaction between the nuclear framework of the molecule and the intense laser field. Our results provide important insights into the coupling of the nuclear framework to a laser field as the molecular geometry of H2O+ is altered in the presence of an external field.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Chem Phys Año: 2019 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Chem Phys Año: 2019 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos