The Imaging Energy Filter (IEF) provides both fast imaging capability and energy filtering. The uniquely designed optical system accurately filters a complete PEEM image over the full detector area, resolving the unfiltered image into single distributions of different energies. Each distribution can be attributed to a specific work function, i.e., to a specific chemical phase of the sample. Filtering of the complete image coupled with fast acquisition are unique features for the observation of time dependent systems.
For more information, see also PEEM