Landau Damping
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Longitudinal phase space density manipulation in synchrotron light sources / Manipulação da densidade eletronica no espaço de fase longitudinal em fontes de luz sincrotron
Esta tese investiga a dinâmica longitudinal não-linear do feixe de elétrons de alta intensidade circulante no anel de armazenamento do Laboratório Nacional de Luz Síncrotron (LNLS). Em particular, analisamos os efeitos sobre os modos de oscilação coerentes instáveis e sobre as características de equilíbrio dos pacotes de elétrons decorrentes da ma
Publicado em: 2007
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2. Electrostatic waves in a Maxwellian dusty plasma with variable charge on dust particles
A kinetic formulation developed to analyze wave propagation in dusty plasmas, which takes into account the variation of the charge of the dust particles due to inelastic collisions with electrons and ions, is utilized to study the propagation and damping of electrostatic waves with wave number exactly parallel to the external magnetic field and Maxwellian di
Brazilian Journal of Physics. Publicado em: 2006-09
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3. Parallel permittivity elements for radio frequency waves in elongated D-shaped tokamaks
Parallel permittivity elements are derived for radio-frequency waves in an axisymmetric tokamak with D-shaped transverse cross-sections of the magnetic surfaces under arbitrary aspect ratio, arbitrary elongation and small triangularity. The bounce resonances are taken into account for untrapped (passing or circulating) and three groups of trapped particles.
Brazilian Journal of Physics. Publicado em: 2004-12
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4. Spectral contents of electron waves under strong Langmuir turbulence
In this work we present experimental results of electron plasma waves excited in a beam plasma system. Based on our experimental results we determine the transition from the quasi-linear to non-linear regime. We present the space evolution of the electron beam distribution function for both regimes. The spectrum of the electron plasma wave in the non-linear
Brazilian Journal of Physics. Publicado em: 2003-12
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5. Collisionless dissipation of radio-frequency waves in axisymmetric tokamak plasmas
Contributions of trapped and untrapped particles to the transverse and longitudinal dielectric permittivity elements are present for radio-frequency waves in a tokamak with circular cross-sections of the magnetic surfaces and arbitrary aspect ratio. Imaginary parts of the longitudinal permittivity elements are important to estimate the wave power absorbed by
Brazilian Journal of Physics. Publicado em: 2002-03