| 摘要 |
PURPOSE:To enable a small-sized device to generate thin and strong parallel X-ray beams effectively with small electric consumption by taking out thin X-ray beams which make repetitive total reflection on the inner face of a through aperture and are emitted from the other end thereof, and separating said beam with a deflecting means. CONSTITUTION:A target 7 to generate X-rays is provided with a small through aperture 9. X-rays are generated by throttling an exciting electron beam to be incident inward from one end of the through aperture 9. Part of the X-rays are radiated towerd the opening opposite to the aperture 9 to be incident to the inner side of the aperture 9 at a smaller angle than the critical angle for total reflection, and total reflection is caused at this incident point. X-rays generated around the entrance of the electron beam and subjected to total reflection are accumulated to grow into strong X-ray beams, which will form parallel X-ray beams having an extremely small diffusion angle equivalent to the total reflection angle. The electron beam passing through the aperture 9 can be easily separated from the X-ray beams by means of a deflective plate 12 or the like. Thus strong and thin parallel X-ray beams can be obtained with an extremely small capacity. |
