Apparatus for Direct Observation of Low‐Energy Electron Diffraction Patterns
作者： E. J. Scheibner , L. H. Germer , C. D. Hartman
DOI: 10.1063/1.1716903
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摘要: An apparatus for the observation of low‐energy electron diffraction patterns on a fluorescent screen is described. The diffracted electrons pass through pair grids and then are accelerated by potential difference order 103 v to excite screen. equipment designed high vacuum, pressures below 2×10−10 mm Hg have been maintained. Different gases can be introduced at low controlled (10−9 10−7 Hg), produced adsorbed layers photographed studied. Typical from clean (111) face nickel crystal oxygen upon this reproduced here.
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