Convergent Beam Electron Diffraction Basic principles

摘要: Convergent beam electron diffraction (CBED) is fairly recent as a standard technique in commercial microscopes. It was invented already 1939 by Mollenstedt [1]; applications crystallography were proposed MacGillavry [2] and Ackerman [3] the 1940’s. In mid 1960’s Goodman Lehmpfuhl [4] revived CBED an alternative to SAD spot patterns, which they saw poor substitutes for integrated intensities used X-ray crystallography. They turned Kossel-Mollenstedt or patterns way of recording one-or two-dimensional rocking curves instead.