Brauer, Andreas (PhD)Kelati, Ghebregaziher2021-12-142023-11-092021-12-142023-11-091985-06http://10.90.10.223:4000/handle/123456789/29302The non- relativistic equntions of motion fo r a chnrged par t icle , an electron , in a wave of slowly varying amplitude aro examined . The ',/ilv e , whistle r wave , is supposed to be propagating at an arbitr ary but small angle to a uniform background magnetic field , in nn infinite collisionless plasma . Approximate solutions f or t he equations of motion of particles in cyclotron resonance with the shistler wave are evaluated by method of ave r aging . An expr ession for the period of trapped par t icles i n a lIpotential well" and an integral of motion in the space of phase difference are der ived . ,enDrift of Charged ParticlesThesis