X線回折顕微像のテレビ観察法
1974 年 43 巻 3 号 p. 230-245
詳細
1974 年 43 巻 3 号 p. 230-245
An instantaneous display of topographic images with a resolution of 20_??_30, tam was made by a TV system with an X-ray sensing PbO-vidicon camera tube. Diffracted intensities necessary for the display were obtained with an X-ray generator which was operated at 60 kV and 0.5A for a focus size of 0.5×10mm with Cu-Cr (1%) alloy- and Mo-rotating targets. For transmission topography, two regions with a width of 1mm each on a specimen crystal are seen on a picture monitor with Ka1 and Ka2 radiation. By moving both the crystal and TV camera and storing the Kai images consecutively in an image storage tube, a Lang topograph with an area of 13×9mm is synthesized for 3_??_10 sec. This storage improves image quality, and the signal-to-noise ratio of _??_10 is obtained for individual dislocation images in Si crystals. The capability of the system is demonstrated by some applications for the in situ observation of dislocation motion and melt-growth process of Si crystals.
