JPS6417000A - Artificial white x-ray source - Google Patents

Abstract

PURPOSE:To artificially form white X-rays by projecting electron rays to a target arranged with different materials on the same disk centering at the center of rotation of a rotating plate. CONSTITUTION:The circular rotating plate 21 is mounted onto a shaft 22 and is rotated by a rotational driving mechanism 23. An annular recess 24 centering at the shaft 22 is provided onto one face of the rotating plate 21 and materials which emit characteristic X-rays of wavelengths varying each slightly are embedded into the recess 24 to constitute the target 25. The characteristic X-rays 32 are radiated from the target 25 when the electron rays 29 are projected to the target 25 from an electron gun 28 while the rotating plate 21 is kept rotated. The parts of the target 25 to which the electron rays 29 are projected consist of the successively different materials as the rotating plate 21 rotates and, therefore, the characteristic X-rays of the successively varying wavelengths are radiated. The nearly white X-rays are thus artificially and continuously obtd. by rotating the rotating plate 21 at a high speed.