J. C.H. Spence, C. J. Humphreys

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Expressions for the energy and angle dependent cross section for channeling radiation are given in the nearly-free electron approximation. General selection rules are also given, and the nature of the allowed transitions is described on the dispersion surfaces of high energy electron diffraction. An interpretation of the radiation in terms of 'extinction distance wiggling', consistent with the theory of the free-electron laser, is given. The crystal structure information in channeling radiation spectra is elucidated.

Original languageEnglish (US)
Pages (from-to)225-242
Number of pages18
JournalOptik (Jena)
Issue number3
StatePublished - Jan 1 1984
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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