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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 gyroradius is given by :, 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 strength of the magnetic field. The angular frequency of this circular motion is known as the gyrofrequency, or cyclotron frequency, and can be expressed as : in units of radians/second.〔 ==Variants== It is often useful to give the gyrofrequency a sign with the definition : or express it in units of Hertz with :. For electrons, this frequency can be reduced to :. In cgs units, the gyroradius is given by : and the gyrofrequency is :, where is the speed of light in vacuum. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「gyroradius」の詳細全文を読む スポンサード リンク
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