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AbstractAbstract
[en] The halo plasma, which is a thin plasma surrounding the Field Reversed Configuration (FRC), was observed in the Staged Theta Pinch-Linear (STP-L) experiment. The experimental results show that the ion flow in the halo plasma increases in opposite directions at the vicinity of the separatrix and at the edge of the halo, when the end effect is reduced by the guide field. This double structure of ion flow may be explained by the proposed model that halo plasma is formed by energetic ions shuttling between the FRC and the open field region, and the numerical results is in a good agreement with the experiment. The proposed model also suggests that the FRC has a good confinement ability for the energetic particles in the plasma does not connect with the discharge tube. (author)
[pt]
O plasma aureolar, que e um fino plasma envolvendo a configuracao de campo reverso (FRC), foi observado numa experiencia de teta-pinch linear. Os resultados experimentais mostram que a vazao ionica no plasma aureolar aumenta em direcoes opostas na vizinhanca da separatriz e na borda da aureola, quando o efeito fim e reduzido pelo campo guia. Esta estrutura dupla da vazao ionica pode ser explicada pelo modelo proposto, de que o plasma aureolar e formado por ions energeticos lancados entre o FRC e a regiao de campo aberto. Os resultados numericos estao em boa concordancia com os resultados experimentais. O modelo proposto sugere que o FRC possue uma boa capacidade de confinamento para as particulas energeticas se o plasma nao estiver conectado ao tubo de descarga. (M.C.K.)Primary Subject
Source
Apr 1987; 35 p
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Miscellaneous
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