HREELHigh-Resolution Electron Energy Loss
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The information obtained by HREELS is similar to that provided by infrared and Raman spectroscopy.
Current applications of HREELS include the study of:
In HREELS, a monoenergetic beam of low-energy electrons is focused onto a sample surface.
The most extensive use of HREELS involves identifying adsorbed molecules and molecular intermediates on metal single-crystal surfaces.
Information provided by HREELS is complementary to the compositional information provided by Auger spectroscopy and SIMS and the insights into electronic structure offered by XPS and UPS.
However, HREELS can be effective in providing high surface sensitivity at a much smaller sampling depth (less than 2 nm) and a wider spectral range (50-4000 cm(-1)) than many of these other techniques.