The Field Emission Electron Distribution Spectrometer is designed to determine the energy distribution of an electron emitter, e.g. a tip cathode for laser assisted field emission. The energy analyzer is to be installed into a suitable vacuum chamber. CF38 (2.75” OD) multiple feedthroughs are used for the electrical connection. The analyzer is equipped with a µ metal shielding.

The extraction field is defined by the potential difference between the tip and the first electrode of the analyzer. The potential difference is a maximum of 2000 V.

The potential of the electron emitter can be set as follows

  • Low potential setup (LPS): the potential of the electron emitter is near the ground potential
  • High potential setup (HPS): the potential of the electron emitter is max. -2000 V

The detection of electrons is carried out using a channeltron (CEM) or chevron MCP detector with metal anode (DMCP), or a photo multiplier.

Analyzer

  • Energy range: up to 2000 eV
  • Energy resolution : better 100 meV