Directly Imaging Fast Reaction Fronts Metadata

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Title

  • Main Title Directly Imaging Fast Reaction Fronts

Creator

  • Author: Kim, J. S.
    Creator Type: Personal
  • Author: LaGrange, T. B.
    Creator Type: Personal
  • Author: Reed, B. W.
    Creator Type: Personal
  • Author: Campbell, G. H.
    Creator Type: Personal
  • Author: Browning, N. D.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

  • Creation: 2007-02-21

Language

  • English

Description

  • Content Description: Direct observation of fast intermetallic phase formation in Reactive Multilayer Foils (RMLFs) has been achieved. Snap-shots of the reaction appear to show development of mass-thickness contrast of the unmixed Al and Ni layers and an intermetallic phase. Electron imaging of these RMLF reaction fronts have never been attained in the past. The reaction front travels at {approx}10 meters per second as the nanoscale layers mix in an exothermic chain reaction, thus making traditional in situ electron microscopy {approx}10{sup 5} times too slow to produce such an image. The DTEM capability to produce several million electrons within nanoseconds for single-pulse imaging made this experiment possible. Additionally, the sample drive laser ensures reliable experiment initiation and repeatability. In no other way could such a high velocity event be captured at this magnification. RMLF reaction fronts continue to be analyzed via diffraction for complete phase evolution with respect to time. High quality diffraction patterns enable quantitative phase information to be obtained for future comparison to simulation.
  • Physical Description: PDF-file: 2 pages; size: 4.4 Mbytes

Subject

  • Keyword: Diffraction
  • Keyword: Electron Microscopy
  • STI Subject Categories: 75 Condensed Matter Physics, Superconductivity And Superfluidity
  • STI Subject Categories: 37 Inorganic, Organic, Physical And Analytical Chemistry
  • STI Subject Categories: 36 Materials Science
  • Keyword: Simulation
  • STI Subject Categories: 42 Engineering
  • Keyword: Velocity
  • Keyword: Meters
  • Keyword: Electrons
  • Keyword: Lasers
  • Keyword: Chain Reactions
  • STI Subject Categories: 47 Other Instrumentation

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: UCRL-TR-228301
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/902297
  • Office of Scientific & Technical Information Report Number: 902297
  • Archival Resource Key: ark:/67531/metadc890665
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