Coherent bremsstrahlung from kilovolt electrons in zone axis orientations

G. M. Reese, J. C.H. Spence, N. Yamamoto

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

New experimental results are reported for type B coherent bremsstrahlung (CB) radiation from kilovolt electrons traversing thin crystals in zone axis orientations, obtained using an electron microscope and energy dispersive X-ray detector, approximately at right angles to the beam. These results are interpreted using the three-dimensional Bloch wave theory of multiple coherent electron scattering, which predicts coherent bremsstrahlung (‘weak-beam radiation’), channelling radiation (‘Pendellösung radiation’) and combinations thereof. Absent CB peaks are observed from Laue zones in which all structure factors are zero. Doppler broadening is found to make the observation of channelling radiation satellites on CB peaks difficult. Closed-form expressions for ‘resonant’ CB are given.

Original languageEnglish (US)
Pages (from-to)697-716
Number of pages20
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume49
Issue number5
DOIs
StatePublished - Nov 1984
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)
  • Metals and Alloys

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