Browsing by Subject "Fisica dos fluidos, fisica dos plasmas e descargas eletricas"
Now showing items 1-13 of 13
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Aplicação da teoria da bifurcação na dinâmica do pêndulo gravitacional composto
(1997) [Abstract published in event] -
Coherent and incoherent radiation from free-electron lasers with an axial guide field
(1981) [Journal article]The spontaneous and induced emission from a free-electron laser is treated for the case in which an axial magnetic field is imposed in addition to the helical, axially periodic wiggler magnetic field. The classes of possible ... -
Collective effects on the operation of free-eletron lasers with an axial guide field
(1982) [Journal article]The collective interaction in a free-electroii laser with combined helical wiggler and uniform axial guide fields is presented in the linearized regime. The analysis involves a perturbation of the Vlasov-Maxwell equations ... -
Efeitos de gradientes perpendiculares na amplificação da radiação quilométrica das auroras
(2007) [Dissertation]A in uência do caráter inomogêneo da região-fonte na ampli cação da Radiação Quilom étrica das Auroras é investigada. Inicialmente é feita uma revisão de trabalhos relevantes publicados a respeito do mesmo tema geral, tanto ... -
Electron cyclotron absorption by RF driven current-carrying plasmas with fast particle losses
(1997) [Journal article]We use quasilinear theory to investigate the influence of losses of energetic particles on the behaviour of electron cyclotron absorption during lower hybrid plus electron cyclotron current drive. Our analysis takes into ... -
Estudo da absorção de ondas eletromagnéticas de alta freqüência em plasmas inomogêneos com presença de corrente
(1993) [Dissertation]Neste trabalho estudamos as propriedades dielétricas de plasmas inomogêneos, com ênfase na análise dos efeitos de inomogeneidades sobre a absorção de ondas eletromagnéticas em plasmas portadores de corrente. Inicialmente, ... -
Expansão livre de um gás de esferas rígidas
(1997) [Abstract published in event] -
Improving regular acceleration in the nonlinear interaction of particles and waves
(1995) [Journal article]In this work one studies the effects arising from the inclusion of a stationary extraordinary mode in the resonant interaction of magnetized particles and perpendicularly propagating electrostatic waves. It is found that ... -
Influence of wave dispersion on the self-consistent dynamics of cyclotron-laser-type systems
(1993) [Journal article]In this work, we make use of a Hamiltonian formalism to analyze the wave-particle dynamical interaction that takes place in cyclotronic systems. It is shown that the usual model of test particles moving in externally given ... -
Mapas não monotônicos e bifurcações a eles associadas em aceleradores a laser
(1995) [Abstract published in event] -
Resonant islands without separatrix chaos
(1995) [Journal article]An alternative type of Hamiltonian nonlinear resonant island is analyzed. In the usual case where the resonant island is pendulumlike, chains bifurcated out of the central elliptic point undergo infinite cascades of ... -
Self-consistent chaos and Arnold diffusion in a cyclotron-maser wave-particle system
(1995) [Journal article]In this work, we search for the presence of chaos in a self-consistent model for the cyclotronresonance maser accelerator. Two characteristic regimes are identified. If the initial action variable of the accelerating ... -
Sistemas de ermakov
(1990) [Abstract published in event]