Development and performance of a fast fibre-plate coupled CCD camera at medium energy and image processing system for electron holography
1996
Abstract A new slow-scan CCD camera with a readout speed of either 2 MHz or 150 kHz has been developed for electron microscopy at medium energy. Rules for the design of electron image converters will be presented, and the most relevant data - such as sensitivity, modulation transfer function (MTF), and detective quantum efficiency (DQE) - of two different scintillator types (single-crystal YAG and poly-crystal P20) are measured. The camera is fully integrated into the image processing system VIPS-1000, which is designed for electron microscopy including remote control functions. The modular software package EM-MENU contains a broad range of functions optimized for fast and user-friendly operation of the TEM. Two application programs for object wave reconstruction by off-axis holography or focus variation will be presented.
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