Space charge


These electrons collect and form a cloud of negative charge around the metal surface. This space charge repels and limits the further emission of electrons from the surface and is referred to as the space charge effect. The effect is most noticeable at lower kVp.

Physics and imaging technology: x-ray
Share article

Article information

rID: 29786
Section: Physics
Synonyms or Alternate Spellings:
  • Space charge effect

Support Radiopaedia and see fewer ads

Updating… Please wait.


 Thank you for updating your details.