Radiação síncrotron coerente em aceleradores de laboratório e sua aplicação na interpretação do duplo espectro em explosões solares

• Ano de defesa: 2016
• Autor(a) principal: Cruz, Wellington Luiz da
• Orientador(a): Szpigel, Sérgio
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Presbiteriana Mackenzie
• Palavras-chave em Português: radiação; giromagnética; sincrotrônica; microbunching; terahertz
• Área do conhecimento CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::ASTRONOMIA::ASTROFISICA DO SISTEMA SOLAR
• Link de acesso: http://dspace.mackenzie.br/handle/10899/24134

Recent observations of solar flares at high-frequencies have provided evidence of a new spectral component with fluxes increasing with frequency in the sub-THz to THz range. This new component occurs simultaneously but is separated from the well-known microwave spectral component that maximizes at frequencies of a few to tens of GHz. The aim of this work is to study in detail a mechanism recently suggested to describe the double spectrum observed in solar flares based on the physical process known as microbunching instability, which occurs with high-energy electron beams in laboratory accelerators. Such a process is responsible for the production of synchrotron radiation with a double spectrum similar to that observed in solar flares, showing a broadband coherent synchrotron radiation component (CSR) and a distinct incoherent synchrotron radiation component (ISR) with maximum at higher frequencies.