The X-Ray Topography with a Background of a Low Level in Bragg Case

Abstract

The intensity distribution of X-ray wave field in Bragg case in a deformed crystal is calculated by solving Takagi’s equations for an incidence of a very narrow wave. The intensity flow which will contribute to a formation of the image for a deformation in a crystal can be seen separate from the intensity distribution due to the direct reflection of incident wave on the entrance surface. A method for the topographic observation of a deformation almost without the intensity to give rise to a background is suggested. This method would be used for the traverse topography as well as the section one in Bragg case. It is also discussed that the suggested topographic method may be arranged to select an area to observe.