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International
Tables for Crystallography Volume C Mathematical, physical and chemical tables Edited by E. Prince © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. C. ch. 7.1, p. 630
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Image converters and television cameras with X-ray-sensitive photocathodes have been reported. These cathodes must be thin, or they must have a low bulk density to allow the photoelectrons to escape (Bateman & Apsimon, 1979![[link]](/graphics/greenarr.gif)
; Haubold, 1984).
Television tubes with a beryllium window and a 25 mm diameter lead oxide target are available and experimental 125 mm tubes have been described (Suzuki, Uchiyama & Ito, 1976).
X-ray-sensitive Saticon television camera tubes with an amorphous selenium–arsenic target (Chikawa, Sato & Fujimoto, 1984) have an active diameter of only 10 mm but a limiting resolution (MTF = 5%) of 6 µm. They have an absorption efficiency of 52% for Mo Kα radiation and are used mainly for X-ray topography. Other X-ray-sensitive television camera tubes have been described by Matsushima, Koyama, Tanimoto & Yano (1987), Suzuki, Hayakawa, Usami, Hirano, Endoh & Okamura (1989) and Sato, Maruyama, Goto, Fujimoto, Shidara, Kawamura, Hirai, Sakai & Chikawa (1993). Such tubes are discussed further in Section 7.1.7.
References
Bateman, J. E. & Apsimon, R. J. (1979). A new photocathode for X-ray image intensifiers operating in the 1–50 keV region. Adv. Electron. Electron Phys. 52, 189–200.Google Scholar
Chikawa, J., Sato, F. & Fujimoto, I. (1984). High-resolution topography detector. Acta Cryst. A40, C403.Google Scholar
Haubold, H. G. (1984). An integrating 2-D position-sensitive X-ray detector for high-flux diffuse scattering applications. Communication to ESRP Working Party on Detectors.Google Scholar
Matsushima, I., Koyama, K., Tanimoto, M. & Yano, Y. (1987). Soft X-ray imaging by a commercial solid state TV camera. Rev. Sci. Instrum. 58, 600–603.Google Scholar
Sato, F., Maruyama, H., Goto, K., Fujimoto, I., Shidara, K., Kawamura, T. W., Hirai, T., Sakai, H. & Chikawa, J. (1993). Characteristics of a new high-sensitivity X-ray imaging tube for video topography. Jpn. J. Appl. Phys. 32, 2142–2146.Google Scholar
Suzuki, Y., Hayakawa, K., Usami, K., Hirano, T., Endoh, T. & Okamura, Y. (1989). X-ray sensing pick-up tube. Rev. Sci. Instrum. 60, 2299–2302.Google Scholar
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