Relativistic Motion in the Presence of Cyclotron Resonant Electromagnetic Waves

摘要

The relativistic collisionless motion of magnetically trapped electrons under the influence of an rf wave with frequency near an integral multiple of their ambient synchrotron frequency is studied analytically. A Hamiltonian formalism is used to determine the phenomena of losing or maintaining local resonance and the accumulation of dispersion of the electrons in the magnetic well as they heat. Sustenance of resonance is shown to be markedly dependent on the index of refraction of the wave and that the inherently relativistic detrapping effect can be important even for low energies and enhanced by low energy collisions. (ERA citation 12:010532)