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A Study for The X-ray Image Acquisition Experiment Using by Gas Electron Multipliers  

강상묵 (연세대학교 보건과학대학 의공학과, 의공학연구소)
한상효 (한국원자력연구소)
조효성 (연세대학교 보건과학대학 방사선학과, 보건과학연구소)
남상희 (인제대학교 의료영상연구소)
Publication Information
Journal of Biomedical Engineering Research / v.24, no.2, 2003 , pp. 83-89 More about this Journal
Abstract
The gas electron multiplier placed in the drift volume of conventional gas detectors, is a conceptually simple device for producing a large gas gain by concentrating the drift electric field over a very short distance to the point that electron avalanching occurs(〉 10$^4$ V/cm), greatly increasing the number of drifting electrons. This device consists of a thin insulating foil of several tens of urn in thickness. covered on each side with a thin metal layer(Cu), with tiny holes, usually 100 ${\mu}{\textrm}{m}$ or less in diameter. and with a spacing of 100-200 ${\mu}{\textrm}{m}$ through the entire foil. perforated by using chemical etching or high-powered laser beam technique In this study, we have investigated its operating properties with various experimental conditions, and demonstrated the possibility of using this device as a digital X-ray imaging sensor, by acquiring X-ray images based on the scintillation properties of the gas electron multiplier with standard CCD camera.
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