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- W992597618 abstract "The determination of the imaging properties of electron–optical systems, ensuring the transfer of an electron image from the photocathode to the luminescent screen of an image intensifier, represents a complex problem. Problems peculiar to the electron optics of X-ray image intensifiers are the large entrance diameter, dictated by the human anatomy, and the strong demagnification, necessitated by the brightness requirements of the subsequent systems, such as vidicons and film cameras. Like any imaging devices, X-ray image intensifiers suffer from image distortions such as spherical and chromatic aberrations, coma, astigmatism, and geometric distortion. Besides the well-known types of aberrations, generally based on the assumption of cylindrical symmetry, another kind of image deterioration that results from the deviations from cylindrical symmetry claims particular attention. The chapter discusses two methods that are used for the determination of the imaging properties of the electron–optical systems of X-ray image intenders: (1) an experimental method based on the use of a demountable and permanently pumped model of the investigated tube enabling easy alterations in the geometry of the electron–optical systems and (2) a computer method utilizing preset programs for determining the imaging properties of the investigated electron–optical systems." @default.
- W992597618 created "2016-06-24" @default.
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- W992597618 date "1985-01-01" @default.
- W992597618 modified "2023-10-05" @default.
- W992597618 title "The Effect of Electron Optics on the Properties of the X-Ray Image Intensifier" @default.
- W992597618 doi "https://doi.org/10.1016/s0065-2539(08)61531-0" @default.
- W992597618 hasPublicationYear "1985" @default.
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