Chapter

Chapter 7.2 Detectors for electrons

Mathematical, physical and chemical tables

First Online Edition (2006)

Part 7. Measurement of intensities

  1. J. N. Chapman

Published Online: 1 JAN 2006

DOI: 10.1107/97809553602060000605

International Tables for Crystallography

International Tables for Crystallography

How to Cite

Chapman, J. N. 2006. Detectors for electrons. International Tables for Crystallography. C:7:7.2:639–643.

Author Information

  1. Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, Scotland

Publication History

  1. Published Online: 1 JAN 2006

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Abstract

Detectors for electrons can be divided into two categories. In the first category, all electron beams are static in the sense that neither the beams incident on nor emergent from the specimen are varied in position or orientation during the detection and recording process. Detectors in the second category employ a scanning system to vary the position or orientation of the electron beams before or after the specimen. Whilst many of the properties required of total flux and flux‐density detectors differ significantly, all detectors must satisfy certain criteria. A means of characterizing detectors is given together with a brief description of which particular features are desirable in each of the two categories. Specific detectors suitable for parallel recording are considered next, where a description is given both of their operation and of the extent to which they fulfil the criteria outlined in the preceding section. Finally, similar details are given for detectors suitable for serial recording purposes.

Keywords:

  • characterization of detectors;
  • detectors;
  • electron diffraction;
  • electron‐tube device for measurement of intensities;
  • Faraday cages;
  • fluorescent screens;
  • imaging plates;
  • photographic emulsions;
  • photographic films;
  • scintillation detectors;
  • semiconductor detectors;
  • solid‐state detectors