ARPES setup

The task is to measure the energy and momentum of the photoemitted electrons.

An electron analyzer contains three main parts:

1. Electrostatic lens system: which select the emission angle and focus the electrons on the entrance slit of the analyzer.

2. Energy analyzer: typical analyzers are hemispherical. A potential difference is set between two hemispheres. The electrons transmission through the analyzer is determined by the potential difference between the two hemispheres and the electron kinetic energy.

3. Electron detector: it maybe an electron multipliers or two-dimensional channel plates.