| 摘要 |
PURPOSE:To obtain a picture of a high quality, by coating a thin metallic aluminum layer over a metallic beryllium plate, and coating a converting substance layer to convert the X-ray energy into an electrical signal over the thin metallic aluminum layer. CONSTITUTION:A completed target 10 is composed by coating a metallic aluminum layer 13 with smooth surface over a metallic beryllium plate 11, over which is coated a converting substance layer 12 to convert the X-ray energy into an electrical signal, and by sealing up the converting layer 12 in a vacuum container furnishing an electron gun composition and the like. The favorable manufacture is that the metallic beryllium plate 11 is surface-treated by undiluted sulfuric acid or pure water, and then a metallic aluminum (Al) layer 13 is coated and formed over a side of the beryllium plate 11. After that, the surface of the metallic aluminum layer 13 side is grinded and removed up to the position of the X-X' line beyond the recessed portions 13a of the surface to gain a smooth surface of aluminum layer 13. Finally, the converting substance layer 12 to convert the X-ray energy into an electrical signal is coated and formed.
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