| 摘要 |
A radiation detector for imaging a sheet-shaped beam ( 11 ) of ionizing radiation comprises an electron multiplication chamber ( 12 ) filled with a medium for electron multiplication; and a solid multichannel structure ( 14 ) arranged in the path of the sheet-shaped beam within the chamber, wherein the structure liberates electrons ( 16 a) in response to being exposed to the radiation. An electron detecting means ( 17 d) is provided for detecting the electrons spatially resolved to thereby image the sheet-shaped beam. The structure ( 14 ) is of a scintillating material, so that said the structure emits scintillating light in response to being exposed to the radiation; and detecting means ( 19 - 20 ) are provided for detecting scintillating light ( 18 ) emitted from the structure.
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