Recent Improvements in Real Time Gas Electron Diffraction,

Abstract

A 40 KeV focused electron beam intersects an effusive gas jet and the scattering pattern generated is displayed on a fluorescent screen. Currently the screen is optically coupled by a transfer lens to the photodiode array sensor, where as many as 1024 independent and equidistant channels record the angular dependence and intensity profile of the scattered electrons. Thus, in a matter of minutes, entire scattering cross sections are available for analysis. In contrast to the feedback latency inherent in photographic practice, this rapid data collection and interpretation allows for immediate on-line optimization of experimental conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1985
Accession Number
ADA169874

Entities

People

  • David W. Paul
  • John D. Ewbank
  • Lothar Schafer

Organizations

  • University of Arkansas

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Alkenes
  • Chemistry
  • Data Acquisition
  • Data Sets
  • Detection
  • Detectors
  • Diffraction
  • Dynamic Range
  • Electron Beams
  • Electron Diffraction
  • Electron Probes
  • Electrons
  • Fluorescent Screens
  • Momentum Transfer
  • Scattering
  • Scattering Cross Sections

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Molecular Photonics/Laser Physics
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics