Pendellosung Fringes in Distorted Clystals : I. Fermat's Principle for Bloch Waves
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概要
- 論文の詳細を見る
A wave-optical foundation is given for a geometrical optics for electrons and X-rays in distorted crystalline media. A "modified Bloch-wave" and the associated Eikonal function are introduced for this purpose. The modified Bloch-wave behaves like the usual Bloch-wave within local small regions. The trajectory of the wave can be given by a variational principle as to the phase integral along a path with fixed end points A and B, namely δ∫^B_A(k_0・dr)=0k_0 being the wave-vector associated with the modified Bloch-wave. This is nothing more than the Fermat's principle. The Euler's equation of the variational equation gives the change in k_0 along the trajectory.
- 社団法人日本物理学会の論文
- 1963-12-05
著者
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Kato Norio
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Kato N.
Department of Applied Physics, Faculty of Engineering Nagoya University
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