Geração de ondas e produção de pares devido às interações neutrino/laser-plasma

• Autor(a) principal: Rios, Luciana Antunes
• Data de Publicação: 2006
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal Fluminense (RIUFF)
• Texto Completo: https://app.uff.br/riuff/handle/1/18652
• topic: Interação Neutrino-Plasma; Ondas de Plasma; Aceleração de Partículas; Interação Laser-Plasma; Neutrino-Plasma Interaction; Plasma Wave; Particle Acceleration; Laser-Plasma Interaction; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA

in the last decades, the interest in particle acceleration mechanisms using plasmas has increased, caused mainly by the promises of an accelerator at the hightest energies. These plasma-based mechanisms use plasma waves produced during laser/particle-plasma interactions to accelerate particles. And since plasma isthe ordinary satate of matter in the universe, many scientists believe that these acceleration mechanisms and their associated processes can have a fundamental role in astrophysics and space physics, and can help to ansewer many unresolved question. Like electrons photons, neutrinos can also generate colletive effects in plasmas. The neutrino-plasma coupling is possible due to the effective charce that neutrinos acquire during their propagation through the medium. However, due to the nature of the weak force, only intenses fluxes of neutrinis have a significant effect on a plasma. Therefore, the neutrino-plasma interactions are important in astrophysical environments where huge fluxes of neutrinos are released, like in supernovae, for example. In the present work, a classical fluid description is used to investigate neutrino-plasma interactions. We study the generation of plasma waves and particle acceleration, besides other aspects like pair production and the production due to laser-plasma interactions, and verify that our results can be important in the study of many problems in astrophysics.