Experimental Setup
In order to keep the sample clean and free from unwanted adsorbates, LEED experiments are performed in an ultra-high-vacuum environment mbar).
The most important elements in an LEED experiment are
- A sample holder with the prepared sample
- An electron gun
- A display system, usually a hemispherical fluorescent screen on which the diffraction pattern can be observed directly
- A sputtering gun for cleaning the surface
- An Auger-Electron Spectroscopy system in order to determine the purity of the surface.
A simplified sketch of an LEED setup is shown in figure 2.
Read more about this topic: Low-energy Electron Diffraction
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