关键词: 离子通道, 电子回旋脉塞, 轨道稳定性

Abstract: Three-dimensional perturbed motion of relativistic electron in an ion-channel electron cyclotron maser(ICECM) is investigated by using the fluid theory. The result shows that, under the action of electromagnetic wave, the initial helix orbit of electron moving along the ion-channel is perturbed and its projection in the transverse plane is not a standard circle. But the transverse motion of electron is still kept within a ring with a not large thickness and is not divergent so long as the parameters are chosen to avoid two special singularities. So, the electron ' s orbit can be thought to be stable, and the electrons can be transported regularly in the interaction space.

Key words: ion channel, electron cyclotron maser, orbit stability