Topic
Electron backscatter diffraction
About: Electron backscatter diffraction is a research topic. Over the lifetime, 15184 publications have been published within this topic receiving 317847 citations. The topic is also known as: EBSD.
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TL;DR: In this article, the wave function is expanded in spherical harmonics on the surfaces of the set of atomic spheres which build a two-dimensional unit of the structure and the expansion coefficients are determined from the condition that the wave functions should satisfy the integral equation of the problem on each of the surface of the atomic spheres.
Abstract: The method of calculating the intensities of waves in low-energy electron diffraction (LEED) which was applied in Part I to monatomic layers is generalized and applied to complex monolayers and multilayers. Using the “muffin-tin” model, which is widely used in the band theory of metals, the wave function is expanded in spherical harmonics on the surfaces of the set of atomic spheres which build a two-dimensional unit of the structure. The expansion coefficients are determined from the condition that the wave function should satisfy the integral equation of the problem on each of the surfaces of the atomic spheres. The method is interpreted physically in terms of the multiple scattering by the system of atoms. Corresponding to the expansion of the wave function on the atomic spheres the waves falling on and scattered by the atoms are decomposed into “partial waves”. In this picture the theory is shown to be essentially equivalent to the dynamical theory of Ewald and also to the LEED theory of McRae. The pseudokinematical theory of Hoerni is derived if the multiple scattering is completely neglected. The method can be modified, particularly for higher electron energies, to the form which introduces the “scattering matrix” of atomic layers and finally to the form which makes use of Bloch functions and thus becomes equivalent to the usual dynamical theory of X-ray and electron diffraction.
143 citations
TL;DR: In this paper, a method for particle size determination using a Coulter LS230 laser granulometer has been developed, which can analyze particles in the size range 0.04 μm-2000μm.
Abstract: Abstract Particle size distribution is a fundamental property of any sediment or soil, and particle size determination can provide important clues to sediment provenance. For forensic work, the particle size distribution of sometimes very small samples requires precise determination using a rapid and reliable method with a high resolution. A protocol has been developed using a Coulter™ LS230 laser granulometer, which can analyse particles in the size range 0.04 μm–2000μm. The technique is essentially non-destructive, permitting the recovery of critical samples, and has been demonstrated to have high precision for a range of soils, sediments and powders of interest in forensic investigations.
142 citations
TL;DR: In this paper, different grain sizes of aluminum anodes are prepared by equal channel angular pressing (ECAP) at room temperature and examined by electron backscatter diffraction (EBSD) in scanning electron microscope (SEM).
142 citations
TL;DR: In this article, the authors used the convolutional multiple whole profile (MWC) method to analyze the dislocation density of a pre-existing martensite plate and found that the dislocations introduced in austenite due to stress relaxation of transformation strains are believed to assist bainite transformation accompanying variant selection.
142 citations
TL;DR: In this paper, the grain-scale elastoplastic deformation behavior of coarse-grained body centered cubic (BCC) tantalum was simulated using a crystal plasticity finite element method (CP-FEM) and compared to experimental measurements of intragranular strain and rotation fields.
142 citations