Abstract
A liquid nitrogen cooled charge coupled device (CCD) camera with DEC 11-73 computer has been fitted to the Vacuum Generators HB5 scanning transmission electron microscope (STEM). Typically, diffraction patterns are produced in the VG HB5 STFM by rocking the beam on the sample or alternatively by rastering the electrons that emerge from the sample and displaying the resultant scanned image on the CRT. The image is often noisy because the beam current is small (≈1010 a) and the range of interesting intensities is large.
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