Highly bright X-ray generator using heat of fusion with a specially designed rotating anticathode
| Autor: | Takashi Sugimura, M. Wakatsuki, Nobuhisa Watanabe, M. Ikeda, N. Sakabe, M. Tawada, Satoshi Ohsawa, Ken-ichi Ohshima, Kyoyu Sasaki, Kiwako Sakabe |
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| Rok vydání: | 2008 |
| Předmět: |
Centrifugal force
Diffraction Structural Biology Nuclear and High Energy Physics low emittance Astrophysics::High Energy Astrophysical Phenomena Evaporation engineering.material U-shape anticathodes law.invention Optics Coating law heat of fusion Irradiation Instrumentation Physics Radiation business.industry Enthalpy of fusion focusing bending magnets DC/pulse guns Carbon film bright X-ray generators Cathode ray engineering Physics::Accelerator Physics business X-ray generator target life extension |
| Zdroj: | Journal of Synchrotron Radiation |
| ISSN: | 0909-0495 |
| DOI: | 10.1107/s0909049508003993 |
| Popis: | A very compact X-ray generator, 4.3 times more brilliant than can be attained by a conventional rotating-anticathode X-ray generator, has been developed using a U-shaped rotating anticathode and a high-flux electron gun with focusing bending magnet. A new type of rotating anticathode X-ray generator has been developed, in which the electron beam irradiates the inner surface of a U-shaped anticathode (Cu). A high-flux electron beam is focused on the inner surface by optimizing the shape of the bending magnet. The power of the electron beam can be increased to the point at which the irradiated part of the inner surface is melted, because a strong centrifugal force fixes the melted part on the inner surface. When the irradiated part is melted, a large amount of energy is stored as the heat of fusion, resulting in emission of X-rays 4.3 times more brilliant than can be attained by a conventional rotating anticathode. Oscillating translation of the irradiated position on the inner surface during use is expected to be very advantageous for extending the target life. A carbon film coating on the inner surface is considered to suppress evaporation of the target metal and will be an important technique in further realization of highly bright X-ray generation. |
| Databáze: | OpenAIRE |
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