Relativistic electron beams are streams of electrons moving at relativistic speeds. They are the lasing medium in free electron lasers to be used in atmospheric...

physics, relativistic beaming (also known as Doppler beaming, Doppler boosting, or the headlight effect) is the process by which relativistic effects modify...

employs relativistic electrons as a gain medium instead of using stimulated emission from atomic or molecular excitations. In an FEL, a bunch of electrons passes...

resolved images of its surface. In the free-electron laser (FEL), a relativistic electron beam passes through a pair of undulators that contain arrays of dipole...

ways: Not at all: no electron scattering occurs at all and the beam passes straight through. Single scattering: when an electron is scattered just once...

Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen...

Electron diffraction is a generic term for phenomena associated with changes in the direction of electron beams due to elastic interactions with atoms...

nuclei, electrons, and positrons, while others are consistent with jets composed of positron–electron plasma. Trace nuclei swept up in a relativistic positron–electron...

atomic or molecular states, FELs use a relativistic electron beam as the lasing medium, hence the term free-electron. The pursuit of a high-quantum-energy...

accelerator is the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. Particle accelerators can also produce proton beams, which can produce...