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Encyclopedia > Cyclotron radiation

Cyclotron radiation is a type of bremsstrahlung (braking) radiation. It is electromagnetic radiation emitted by moving charged particles trapped in a magnetic field. The Lorentz force on the particles acts perpendicular to both the magnetic field lines and the particle's motion through them, creating an acceleration of charged particles that causes them to emit radiation (and to spiral around the magnetic field lines). Bremsstrahlung, German for braking radiation, is electromagnetic radiation produced by the acceleration of a charged particle, such as an electron, when deflected by another charged particle, such as an atomic nucleus. ... Electromagnetic radiation is a propagating wave in space with electric and magnetic components. ... Charge is a word with many different meanings. ... A particle is Look up Particle in Wiktionary, the free dictionary In particle physics, a basic unit of matter or energy. ... Current flowing through a wire produces a magnetic field (M) around the wire. ... In physics, the Lorentz force is the force exerted on a charged particle in an electromagnetic field or just magnetic field. ... Current flowing through a wire produces a magnetic field (M) around the wire. ...


The name of this radiation derives from the cyclotron, a type of particle accelerator used since the 1930s to create highly energetic particles for study. The cyclotron makes use of the circular orbits that charged particles exhibit in a uniform magnetic field. Furthermore, the period of the orbit is independent of the energy of the particles, allowing the cyclotron to operate at a set frequency, and not worry about the energy of the particles at a given time. Cyclotron radiation is emitted by all charged particles travelling through magnetic fields, however, not just those in cyclotrons. Cyclotron radiation from plasma in interstellar space or around black holes and other astronomical phenomena are an important source of information about distant magnetic fields. The planet Jupiter in particular is a large source of cyclotron radiation. 60-inch cyclotron, circa 1939, showing beam of accelerated ions (perhaps protons or deuterons) causing a blue glow, almost certainly the Cherenkov effect. ... One of the early particle accelerators responsible for development of the atomic bomb. ... // Events and trends The 1930s were spent struggling for a solution to the global depression. ... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ... The word plasma has a Greek root which means to be formed or molded (the word plastic shares this root). ... The interstellar medium (or ISM) is a term used in astronomy to describe the rarefied gas and dust that exists between the stars (or their immediate circumstellar environment) within a galaxy. ... An artists impression of a black hole with a closely orbiting companion star that exceeds its Roche limit. ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ...


Cyclotron radiation would likely be produced in a high altitude nuclear explosion. Gamma rays produced by the explosion would ionize atoms in the upper atmosphere and those free electrons would interact with the earth's magnetic field to produce cyclotron radiation in the form of an electromagnetic pulse (EMP). This phenomenon is of concern to the military as the EMP may damage solid state equipment. This article is about electromagnetic radiation. ... ... Properties For alternative meanings see atom (disambiguation). ... In telecommunications and warfare, the term electromagnetic pulse (EMP) has the following meanings: The electromagnetic radiation from an explosion (especially nuclear explosions) or an intensely fluctuating magnetic field caused by Compton-recoil electrons and photoelectrons from photons scattered in the materials of the electronic or explosive device or in a...


Cyclotron radiation has a spectrum with its main spike at the same fundamental frequency as the particle's orbit, and harmonics at higher integral factors. Harmonics are the result of imperfections in the actual emission environment, which also create a broadening of the spectral lines. The most obvious source of line broadening is non-uniformities in the magnetic field; as an electron passes from one area of the field to another, its emission frequency will change with the strength of the field. Other sources of broadening include collisional broadening from the electron failing to follow a perfect orbit, distortions of the emission caused interactions with the surrounding plasma, and relativistic effects if the charged particles are sufficiently energetic. When the electrons are moving at relativistic speeds, cyclotron radiation is known as synchrotron radiation. sdf f sdf sd ... A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow frequency range, compared with the nearby frequencies. ... The word plasma has a Greek root which means to be formed or molded (the word plastic shares this root). ... In physics, the term relativity is used in several related contexts: Galileo first developed the principle of relativity, being the postulate that the laws of physics should take the same form for all observers in uniform motion with respect to each other. ... Synchrotron radiation is electromagnetic radiation, similar to cyclotron radiation, but generated by the acceleration of relativistic electrons (i. ...


  Results from FactBites:
 
Cyclotron - Wikipedia, the free encyclopedia (1280 words)
The cyclotron was invented by Ernest Lawrence of the University of California, in 1929.
As the beam speed increases, cyclotron radiation is emitted from the side of the beam, because the magnet is turning and slowing, ("braking") the beam.
Their limitations caused the invention of the synchrocyclotron (to overcome relativistic effects), and finally the synchrotron, which overcomes the cyclotron's limitations: The electromagnet saturates, and larger cyclotrons are much too large because of the shape of their vacuum chambers.
Cyclotron radiation - definition of Cyclotron radiation in Encyclopedia (420 words)
Cyclotron radiation is electromagnetic radiation emitted by moving charged particles trapped in a magnetic field.
Cyclotron radiation from plasma in interstellar space or around fl holes and other astronomical phenomena are an important source of information about distant magnetic fields.
Cyclotron radiation has a spectrum with its main spike at the same fundamental frequency as the particle's orbit, and harmonics at higher integral factors.
  More results at FactBites »


 

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