SELF-CONSISTENT CHAOS AND ARNOLD DIFFUSION IN A CYCLOTRON-MASER WAVE-PARTICLE SYSTEM

In this work, we search for the presence of chaos in a self-consistent model for the cyclotron-resonance maser accelerator. Two characterist ic regimes are identified. If the initial action variable of the. acce lerating particles is small, rapid phase bunching occurs and the parti cle population is condensed into a single macroparticle in phase space . As a result, this low-dimensional state is predominantly regular. Fo r larger energies, on the other hand, there is no macroparticle format ion. The system is high dimensional, and chaos is found. Arnold diffus ion appears to occur in these chaotic states.