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RADIATION DETECTOR, AN APPARATUS FOR USE IN PLANAR BEAM RADIOGRAPHY AND A METHOD FOR DETECTING IONIZING RADIATION
RADIATION DETECTOR, AN APPARATUS FOR USE IN PLANAR BEAM RADIOGRAPHY AND A METHOD FOR DETECTING IONIZING RADIATION
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机译:辐射检测器,一种用于平面束射线照相的装置以及一种检测电离辐射的方法
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摘要
A detector (64) for detection of ionizing radiation, an apparatus for use in planar beam radiography, comprising such a detector, and a method for detecting ionizing radiation. The detector comprises: a chamber filled with an ionizable gas; first and second electrode arrangements (2, 1, 18, 19) provided in said chamber with a space between them, said space including a conversion volume (13); means for electron avalanche amplification (17) arranged in said chamber; and, at least one arrangement of read-out elements (15) for detection of electron avalanches. A radiation entrance is provided so that radiation enters the conversion volume between the first and second electrode arrangements. In order to achieve well-defined avalanches the means for electron avalanche amplification includes a plurality of avalanche regions.
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