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Design and construction of a compact, high-repetition-rate ultrafast electron diffraction instrument.
Freelon, Byron; Rohwer, Timm; Zong, Alfred; Kogar, Anshul; Zhou, Hengyun; Wong, Liang Jie; Ergeçen, Emre; Gedik, Nuh.
Afiliación
  • Freelon B; Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
  • Rohwer T; Physics Department and Texas Center for Superconductivity, University of Houston, Houston, Texas 77004, USA.
  • Zong A; Center for Free Electron Laser Science at Deutsches Electronen Synchrotron (DESY), Hamburg 22361, Germany.
  • Kogar A; Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
  • Zhou H; Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA.
  • Wong LJ; Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
  • Ergeçen E; Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095, USA.
  • Gedik N; Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
Rev Sci Instrum ; 94(5)2023 May 01.
Article en En | MEDLINE | ID: mdl-37249410
We present the design and performance of a compact ultrafast electron diffraction instrument. The diffractometer provides a means of examining time-resolved ultrafast dynamical properties of solids. The system's utilization is discussed in terms of instrument parameters and diffraction data from selected condensed matter samples. The difractometer's performance is highlighted in terms of detection sensitivity, instrumental temporal resolution, and the electron beam transverse coherence length. Following specific details of the construction, we present a practical discussion of parameters such as repetition rate and provide advice on general construction approaches for laboratory-based, keV ultrafast electron diffractometers. In addition, design guidance for constructing a compact electron gun source that is well-suited for studying diffraction from hard condensed matter is given. A unique data acquisition scheme, utilizing high laser repetition rates, is presented.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Guideline Idioma: En Revista: Rev Sci Instrum Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Guideline Idioma: En Revista: Rev Sci Instrum Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos