Absolute Positions of Pendellosung Fringes in X-Ray Cases
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概要
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The positions of Pendellosung fringes with respect to the entrance surface were studied experimentally. In section-type experiments, the following results were obtained. (1) At the entrance surface the intensity of the wave field takes the maximum. (2) The distance between the first and second frings is larger than the averaged one. (3) The positions of fringes in a deeper region are shifted by a quarter of the averaged fringe distance towards the entrance surface, compared with the fringe positions expected. from the conventional plane-wave theory of dynamical crystal diffraction. The traverse-type experiments were also carried out. These results are predictable by a spherical wave theory (N.Kato: Acta cryst 14(1961) 526, 627). The fact (3) is due to the phase jumps of the crystal waves at a kind of caustic region near the entrance surface. The phenomenon is similar to the phase anomaly near the focal point of lenses.
- 社団法人日本物理学会の論文
- 1966-06-05
著者
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Kato Norio
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Ando Yoshinori
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Homma Shigeru
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Homma S.
Department of Applied Physics, Faculty of Engineering, Nagoya University
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