Spatially localized group of electrically charged particles travelling in same direction
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Charged particle beam" – news · newspapers · books · scholar · JSTOR(January 2008) (Learn how and when to remove this message)
A charged particle beam is a spatially localized group of electrically charged particles that have approximately the same position, kinetic energy (resulting in the same velocity), and direction. The kinetic energies of the particles are much larger than the energies of particles at ambient temperature. The high energy and directionality of charged particle beams make them useful for many applications in particle physics (see Particle beam#Applications and Electron-beam technology).
Such beams can be split into two main classes:
unbunched beams (coasting beams[1] or DC beams), which have no longitudinal substructure in the direction of beam motion.
bunched beams, in which the particles are distributed into pulses (bunches) of particles. Bunched beams are most common in modern facilities, since the most modern particle accelerators require bunched beams for acceleration.[2]
Assuming a normal distribution of particle positions and impulses, a charged particle beam (or a bunch of the beam) is characterized by[3]
the species of particle, e.g. electrons, protons, or atomic nuclei
the mean energy of the particles, often expressed in electronvolts (typically keV to GeV)
the (average) particle current, often expressed in amperes
the particle beam size, often using the so-called β-function
the beam emittance, a measure of the area occupied by the beam in one of several phase spaces.
These parameters can be expressed in various ways. For example, the current and beam size can be combined into the current density, and the current and energy (or beam voltage V) can be combined into the perveance K = IV−3/2.
The charged particle beams that can be manipulated in particle accelerators can be subdivided into electron beams, ion beams and proton beams.
^Ruggiero, F; Thomashausen, J (June 2005), CERN Accelerator School: Basic Course On General Accelerator Physics, p. 296, doi:10.5170/CERN-2005-004, CERN-2005-004, retrieved 14 November 2017
^Edwards, D.A.; Syphers, M.J. (1993). An Introduction to the Physics of High Energy Accelerators. Weinheim, Germany: Wiley-VCH. ISBN 9780471551638.
^Humphries, Stanley (1990). Charged particle beams(PDF). New York: Wiley-Interscience. ISBN 9780471600145.
and 25 Related for: Charged particle beam information
A chargedparticlebeam is a spatially localized group of electrically chargedparticles that have approximately the same position, kinetic energy (resulting...
A particlebeam is a stream of charged or neutral particles. In particle accelerators, these particles can move with a velocity close to the speed of light...
property of a chargedparticlebeam. It refers to the area occupied by the beam in a position-and-momentum phase space. Each particle in a beam can be described...
Radio beamParticlebeam, a stream of charged or neutral particlesChargedparticlebeam, a spatially localized group of electrically chargedparticles Cathode...
A particle accelerator is a machine that uses electromagnetic fields to propel chargedparticles to very high speeds and energies, and to contain them...
An ion beam is a type of chargedparticlebeam consisting of ions. Ion beams have many uses in electronics manufacturing (principally ion implantation)...
A chargedparticle accelerator is a complex machine that takes elementary chargedparticles and accelerates them to very high energies. Accelerator physics...
(for a fixed particle charge and direction) the quadrupole focuses or defocuses particles in the horizontal plane. Chargedparticlebeam Dipole magnet...
Particle radiation is the radiation of energy by means of fast-moving subatomic particles. Particle radiation is referred to as a particlebeam if the...
magnetic and electrostatic lenses act upon a chargedparticlebeam similarly to optical lenses upon a light beam. Electron optics calculations are crucial...
of reflectance. The purpose of a charged-particlebeam dump is to safely absorb a beam of chargedparticles such as electrons, protons, nuclei, or ions...
operating particle accelerators. As such, it can be described as the study of motion, manipulation and observation of relativistic chargedparticlebeams and...
modifying the path of a beam of chargedparticles by the use of an electric field applied transverse to the path of the particles. The technique is called...
A linear particle accelerator (often shortened to linac) is a type of particle accelerator that accelerates charged subatomic particles or ions to a high...
Concentrated Non-dispersive Energy through the Natural Media", concerning chargedparticlebeam weapons. Tesla published the document in an attempt to expound on...
cyclotron accelerates chargedparticles outwards from the center of a flat cylindrical vacuum chamber along a spiral path. The particles are held to a spiral...
}u_{\mu }\right){\bigg ]}\;,} The Beam-Optical version of the Thomas-BMT, from the Quantum Theory of Charged-ParticleBeam Optics, applicable in accelerator...
electron beam to scan the image by deflecting it vertically and horizontally. Chargedparticlebeam Electron optics Electron beam technology Ion beam Mass...
units). In the case of a particle accelerator dipole magnet, the chargedparticlebeam is bent via the cross product of the particle's velocity and the magnetic...
into other particles almost immediately upon generation. The Higgs field is a scalar field with two neutral and two electrically charged components that...
Particle therapy is a form of external beam radiotherapy using beams of energetic neutrons, protons, or other heavier positive ions for cancer treatment...
forward-directed synchrotron radiation emission by forcing a stored chargedparticlebeam to perform wiggles, or undulations, as they pass through the device...
(accelerator physics), a characterization of the self interaction of a chargedparticlebeam Nominal impedance, approximate designed impedance Impedance matching...
or Cerenkov radiation) is electromagnetic radiation emitted when a chargedparticle (such as an electron) passes through a dielectric medium (such as distilled...
Global Information