An electron gun (also called electron emitter) is an electrical component in some vacuum tubes that produces a narrow, collimated electron beam that has a precise kinetic energy. The largest use is in cathode-ray tubes (CRTs), used in older television sets, computer displays and oscilloscopes, before the advent of flat-panel displays.

electron gun, electrode structure that produces and may control, focus, and deflect a beam of electrons, as in a television picture tube (see figure), where the beam produces a visual pattern on the tube’s screen. The source of the electron beam is the cathode, a flat metal support covered with oxides of barium and strontium.

The electron gun is defined as the source of focused and accelerated electron beam. In other words, it is a device used in CRT for displaying the image on the phosphorous screen of CRT. The electron gun emits electrons and forms them into a beam by the help of a heater, cathode, grid, pre-accelerating, accelerating and focusing anode.

Kimball Physics supplies electron guns designed for use in a wide variety of ultra high vacuum (UHV) surface physics, space physics, and processing applications. Click here to learn more.

Electron and ion systems are optimized for beam energies ranging from 1 eV to 100 keV and beam currents from femtoamperes to amperes. Figure 1. Example of a Kimball Physics Electron Gun.

Nov 27, 2024 · An electron gun generates and directs electron beams using cathodes, anodes, and focusing systems. It powers devices like microscopes and particle accelerators.

Electron Guns are devices that emit electrons using thermal energy or field emission mechanisms, such as tunnelling or Schottky effects, for applications like X-ray chemical analysis and electron backscatter diffraction.