Diffraction Contrast Effects of Electrons Scattered Inelastically through Large Angles

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概要

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• The contrast of electron microscopic images formed by inelastic scattering varies as the scattering angle of electrons which contribute to the image. At 50 kV, the electrons which are scattered inelastically by 2.8×10^<-2> rad. (3θ_B where θ_B is the Bragg angle for 220 reflection) do not give the dislocation image due to the loss of coherence, while the electrons scattered by 9.2×10^<-2> rad. (35 θ_B) still give the dislocation image at 800 kV. In the latter case contrast produced by electrons scattered through large angle is reverse to that of bright-field image. The contrast reversal and loss of coherence are discussed by the dynamical theory of electron diffraction for inelastic scattering. The contrast loss by multiple scattering in a thick crystal is briefly described.

• 社団法人日本物理学会の論文
• 1976-05-15

著者

• NAKAI Yasuo

  Department of Physics, Nagoya University

• KAMIYA Yoshihiro

  Department of Physics,Nagoya University

• Nakai Yasuo

  Department Of Physics Nagoya University

• Kamiya Yoshihiro

  Department Of Physics Nagoya University

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