Product Overview

Disc cathode emitting into a Faraday cup

LaB6 cathodes packaged for shipment

Mounted LaB6 crystal with 50 μm flat (153x)

Kimball Physics emitters provide a reliable source of electrons or ions for use in a variety of instruments including microscopy, lithography, x-ray generation, free electron lasers, electron accelerators, and other custom applications. Other applications include Kimball Physics electron guns and ion guns.



    Base Types

  • High tolerance ceramic with kovar or molybdenum pins
  • Standard ceramic AEI base
  • Compact Kimball Physics CB-104 base
  • Various microscope bases
  • Cathodes may also be mounted on customer-supplied bases


    Alkali Metal Ion Sources

  • Cesium (Cs+)
  • Lithium (Li+)
  • Sodium (Na+)
  • Potassium (K+)
  • Rubidium (Rb+)


To compare cathodes, see the Product Selection/Price Chart.

To view cathodes for specific SEM/TEM instruments and manufacturers, see Cathodes/Emitters for Microscopy.

To learn more, see Technical Information.