11/22/2023 0 Comments Camera gif![]() The imaged line spectra are converted into a two dimensional line plot of electron intensity as a function of electron energy loss. The electrons are chromatically dispersed by a magnetic prism. PEELS mainly), by collecting a dispersed electron spectra on a CCD camera. The GIF camera is a setup of electron energy imaging filter which can be used to acquire EFTEM (energy filtered TEM) images and EELS (electron energy loss spectrum, e.g. On the other hand, with a two-dimensional CCD array as the detector, Gatan imaging filters (GIFs) use both quadrupole and sextupole lenses to correct spectrometer aberrations. After that, the company has developed many versions of EEL spectrometers and GIF cameras. An advantage of GIF design is that it combines both spectral and imaging capabilities.īy using quadrupole lenses Gatan introduced the Model 666 spectrometer to obtain spectra onto a YAG transmission screen and photodiode array in 1986. An important reason for its popularity is that they are not designed to be in-column, but can be attached as a peripheral to an existing EM column. The GIF is installed underneath a conventional TEM system and has similar functions to an in-column energy filters. ![]() The post-column Gatan Image Filter (GIF) is a development of Gatan magnetic-prism PEELS. The most common electron spectrometers today, especially in STEM instruments, are based on magnetic sector prism, such as Gatan GIF (Gatan Imaging Filter) systems.
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