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Instruments for Electron Spectroscopy and Surface Analytics

Electron Gun EKF50/ EKF250


The Focus EKF50/ EKF250 Electron Gun is a source of electrons of variable energy designed for use in Auger electron spectroscopy (AES) applications employing an electron energy analyser or a four grid LEED optic. For enhanced surface sensitivity a grazing incidence geometry is advantageous. The gun can also be used as a charge neutralisation source in SIMS or ESCA applications where the electron beam may be defocused to form a broad spot. The gun fits to the OMICRON NGE51 5kV gun control unit.


Specifications

Beam energy

100 eV - 5 keV

Spot diameter EKF50 (min.)

50 µm

Spot diameter EKF250 (min.)

250µm

Mounting

DN 40 CF

Sample to flange distance

220 - 400 mm


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