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nomadreid
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Trying to work through a paper which includes a discussion of the optical properties of crystal, and the author uses the term "indicatrix", at one point referring to it as a diagram, which makes sense, but another place referring to it as a "volume chart", which I haven't figured out. Could someone tell me what is meant by "volume chart" for the indicatrix, or whether it doesn't apply? Maybe something gets lost in translation? (The paper is in Russian; I'm translating literally.) That is my first question.
Second question: Even more puzzling is that I thought that an indicatrix was an ellipsoid, but the diagram in the paper (attached below), done on MathCad, looks nothing like an ellipsoid. Is it possible for an indicatrix for a crystal to not be an ellipsoid?
A couple more details: the caption for this diagram is
Fig. 4. Diagram (indicatrix) of particle (electron) scattering through 1940 layers of sinusoidal equipotential surfaces of a crystal, ...https://www.physicsforums.com/file:///C:\Users\DAVIDM~1\AppData\Local\Temp\msohtmlclip1\01\clip_image002.jpg https://www.physicsforums.com/file:///C:\Users\DAVIDM~1\AppData\Local\Temp\msohtmlclip1\01\clip_image003.jpg
Second question: Even more puzzling is that I thought that an indicatrix was an ellipsoid, but the diagram in the paper (attached below), done on MathCad, looks nothing like an ellipsoid. Is it possible for an indicatrix for a crystal to not be an ellipsoid?
A couple more details: the caption for this diagram is
Fig. 4. Diagram (indicatrix) of particle (electron) scattering through 1940 layers of sinusoidal equipotential surfaces of a crystal, ...https://www.physicsforums.com/file:///C:\Users\DAVIDM~1\AppData\Local\Temp\msohtmlclip1\01\clip_image002.jpg https://www.physicsforums.com/file:///C:\Users\DAVIDM~1\AppData\Local\Temp\msohtmlclip1\01\clip_image003.jpg
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