Nonlinear Saturation of Cyclotron Maser Instability Associated with Energetic Ring-Beam Electrons

Journal Article · Fri Sep 04 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.105101· OSTI ID:21364676

Lee, K H; Lee, L C; Wu, C S ^[1]; Omura, Y ^[2]

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1. Institute of Space Science, National Central University, Taoyuan, Taiwan (China)
2. Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto (Japan)

We study the cyclotron maser instability (CMI) driven by an energetic ring-beam distribution by a particle simulation to explain possible generation mechanisms of intense radiation phenomena observed in space. The main objective is to understand the nonlinear processes that control saturation of the emission process. Our study reveals new issues that have been overlooked in past literature. It is found that electrostatic wave modes excited by the electron beam instability compete with the electromagnetic waves excited by the CMI. Nonlinear effects of these electrostatic modes tend to redistribute the energy of the energetic electrons and make the physics more complicated. The CMI can be much less effective in a realistic case than it is anticipated theoretically.

• OSTI ID: 21364676
• Journal Information: Physical Review Letters, Vol. 103, Issue 10; Other Information: DOI: 10.1103/PhysRevLett.103.105101; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CYCLOTRONS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
INSTABILITY
MASERS
NONLINEAR PROBLEMS
PLASMA WAVES
SIMULATION
TAIL ELECTRONS
ACCELERATORS
AMPLIFIERS
BEAMS
CYCLIC ACCELERATORS
ELECTRONIC EQUIPMENT
ELECTRONS
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
LEPTON BEAMS
LEPTONS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
PARTICLE BEAMS
RADIATIONS