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Gyrotron




The gyrotron is a type of free electron Maser (microwave amplification by stimulated emission of radiation). It has high power at millimeter wavelengths because its dimensions can be much larger than the Wavelength , unlike conventional vacuum tubes, and it is not dependent on material properties, as conventional masers. The bunching depends on a relativistic effect. The electron speed in a gyrotron is slightly relativistic (comparable to but not close to the speed of light). This contrasts to the Free Electron Laser (and Xaser ) that work on different principles and whose electrons are highly Relativistic .


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