Gyroradius
Radius of particle motion / From Wikipedia, the free encyclopedia
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The gyroradius (also known as radius of gyration, Larmor radius or cyclotron radius) is the radius of the circular motion of a charged particle in the presence of a uniform magnetic field. In SI units, the non-relativistic gyroradius is given by
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where is the mass of the particle, is the component of the velocity perpendicular to the direction of the magnetic field, is the electric charge of the particle, and is the magnetic field flux density.[1]
The angular frequency of this circular motion is known as the gyrofrequency, or cyclotron frequency, and can be expressed as