3582427133
Department of Surface and Nanostructures Physics Institute of Physics UMCS
Analyzer with energy and momentum dispersion
Thick red lines show trajectories of two photoelectrons emitted at two different angles and with the same energy.
Emission angle dispersion is along the ę-axis.
Three thin lines mark trajectories of photoelectrons emitted normal to the sample surface, with different kinetic energies.
Energy dispersion is along the Ek -axis.
A slice determines energy resolution (desired effect) but simultaneously reduces intensity (not desired).
In this manner, each pair of coordinates on channelplate carries information on kinetic energy and emission angle of the detected photoelectron.
These parameters further allow determination parallel momentum componentand binding energy of the electron inside the crystal.
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