In electron beam technology, an electron beam is applied to do useful work. Given the wide range of energies and intensities of electron beams that can be generated, the range of applications is equally large:

• cathode ray tubes
• Electron beam melting
• welding
• Precision drilling of small holes
• sterilization of medical supplies and instruments
• Electron beam microscopes
• Changing the color of gemstones
• curing thermosets
• cross-linking thermoplastics
• texturing
• electron particle beam weapons
• velocity modulation
• klystron