Národní úložiště šedé literatury Nalezeno 3 záznamů.  Hledání trvalo 0.01 vteřin. 
X-ray Image detectors for using in microCT systems.
Papajová, Gabriela ; Malínský, Miloš (oponent) ; Mézl, Martin (vedoucí práce)
The Diploma thesis deals with x-ray detectors for micro-CT systems. The theoretical part summarizes standard types of X-ray detectors and requirements on the image quality for the final 3D reconstruction. In the end, the physical parameters of real detectors and methods of their measurements and evaluation are described.
X-ray Image detectors for using in microCT systems.
Papajová, Gabriela ; Malínský, Miloš (oponent) ; Mézl, Martin (vedoucí práce)
The Diploma thesis deals with x-ray detectors for micro-CT systems. The theoretical part summarizes standard types of X-ray detectors and requirements on the image quality for the final 3D reconstruction. In the end, the physical parameters of real detectors and methods of their measurements and evaluation are described.
Innovation possibilities of scintillation electron detector for SEM
Schauer, Petr ; Bok, Jan
To evaluate performance of a scintillation detection system for SEM, it is necessary to consider many scintillator parameters. Various attributes of the scintillator for the SEM electron detector are listed in. The very important parameters are those affecting the detective quantum efficiency (DQE) which is primarily a measure of image noise. Not a less important indicator of image quality is the modulation transfer function (MTF) which describes the ability to show fine image details. Therefore, using a scanning imaging system, the detector bandwidth, which is given especially by the scintillator decay time, is the key to the good MTF. Currently, the YAG:Ce single crystal scintillator (introduced already in 1978 having somewhat limiting decay characteristic is the most frequently used scintillator in the SEM. The aim of this paper is to outline possibilities of scintillator innovation to get the improved MTF and DQE.

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