Study of Simultaneous Reflexion in Electron Diffraction by Crystals : I. Theoretical Treatment

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概要

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• The simultaneous reflexion by two lattice planes (with indices h and h') in electron diffraction has been treated by the dynamical theory in order to investigate how it is influenced by the phases of structure amplitudes. For convenience of treatment, a modified formulation of the theory has been developed using particular cross sections of the dispersion surface in reciprocal space. Applying the theory to a lamellar crystal, it was proved that the intensities of transmitted and diffracted waves depend in a relatively simple way on the value of |φ_<hh'>| = |ψ_h - ψ_h' + ψ_<h'-h>|, where ψ_h, ψ_h', and ψ_<h'-h> are the phase angles of structure amplitudes for the indices h, h', and h'-h. It was shown that the phase effect can be most easily demonstrated by observing fine structures of reflexion spectra which are obtained by rotating the crystal in a specified manner. The determination of the value of |φ_<hh'>| is most simple when the coupling reflexion h'-h is strong compared with the reflexions h and h', and the crystal is centrosymmetric.

• 社団法人日本物理学会の論文
• 1957-01-05

著者

• Kambe Kyozaburo

  Tokyo Institute Of Technology:(present)electrotechnical Laboratory

関連論文

• Study of Simultaneous Reflexion in Electron Diffraction by Crystals : I. Theoretical Treatment
• Study of Simultaneous Reflexion in Electron Diffraction by Crystals : II. Experimental Confirmation

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