Etudy of the linear and nonlinear regimes in an unmagnetized electron-ion plasma.

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dc.contributor.advisorAraneda Sepúlveda, Jaime Andréses
dc.contributor.advisorNavarro Maldonado, Roberto Elíases
dc.contributor.authorCarril Pardo, Hugo Alexises
dc.date.accessioned2020-09-05T23:31:18Z
dc.date.accessioned2024-05-15T18:57:28Z
dc.date.accessioned2024-08-28T22:32:29Z
dc.date.available2020-09-05T23:31:18Z
dc.date.available2024-05-15T18:57:28Z
dc.date.available2024-08-28T22:32:29Z
dc.date.issued2020
dc.descriptionTesis presentada para optar al grado de Magíster en Ciencias con mención en Física.es
dc.description.abstractIn order to study how the dynamics of an unmagnetized Maxwellian electron plasma is modified by the presence of mobile positive heavy ions, the present work aims to study the regimes of damped and nonlinear perturbations in a driftless Maxwellian electron-ion plasma, considiring a mass ratio mi/me = 1836.153 and charge ratio qi/|qe| = 1.0, specifically in the range of low frequencies (ωr ≤ 0.2ωpe) and velocities in the order of the ion acoustic phase velocity vφ,IA for the excited wavenumber, primarily for the temperature ratio Ti/Te = 1.0. Also, the response of the plasma is studied for different temperature ratios Ti/Te above and below Ti/Te = 1.0. The whole study is accomplished through numerical simulations of the Vlasov-Poisson system of equations using spectral interpolation in position and velocity, and symplectic integration in the time dependency. It is expected that in the case of damped perturbations both Langmuir and ion acoustic waves propagate relatively independent from each other and exhibit opposite behaviors in the velocity range of interest, whereas in the nonlinear case, electrostatic solitary waves are expected to arise due to the presence of heavy mobile ions related to electron trapping and ion acoustic solitons. It is expected that dynamics related to the ions is accentuated with lower ratios Ti/Te.en
dc.description.campusConcepciónes
dc.description.departamentoDepartamento de Físicaes
dc.description.facultadFacultad de Ciencias Físicas y Matemáticases
dc.identifier.urihttps://repositorio.udec.cl/handle/11594/629
dc.language.isoeses
dc.publisherUniversidad de Concepciónes
dc.rightsCC BY-NC-ND 4.0 DEED Attribution-NonCommercial-NoDerivs 4.0 Internationalen
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectSistemas no Linealeses
dc.subjectOndas de Plasmaes
dc.subjectPlasmaes
dc.subjectFrecuenciases
dc.subjectFrecuencias de Sistemas Oscilanteses
dc.subjectIndustria Innovación e Infraestructuraes
dc.titleEtudy of the linear and nonlinear regimes in an unmagnetized electron-ion plasma.en
dc.typeTesises

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