Maintence of the Synchronism between a Particle and Electromagnetic Wave with the Help of Electrostatic Field

It is shown analytically and numerically that effective acceleration of the particle at the small distance at the regime of cyclotron autoresonance, supported with the help of synshronizied electrostatic field, is possible. It is shown that in the accompanying reference frame moving with the electric drift velocity the new resonant effects arise connected with the effects of finite gyroradius. It is noted that in the case of the large enough electric drift velocity in the accompanying reference frame the averaging of the motion equations becomes invalid.

charged particle, relativistic motion, electromagnetic wave, cyclotron autoresonance, electric drift, finite gyroradius