Numerical simulation of a negative ion plasma expansion into vacuum

Autor:	Leonardo Geissler Garcia, E. Fijalkow, J. Goedert, H. Figua, Marc R. Feix
Jazyk:	angličtina
Rok vydání:	1997
Předmět:	Physics Física de plasmas Computer simulation Waves in plasmas Charge (physics) Eulerian path Plasma Condensed Matter Physics Variation of parameters Ion symbols.namesake Transformation (function) Physics::Plasma Physics symbols Atomic physics
Zdroj:	Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS
Popis:	The expansion into vacuum of a one-dimensional, collisionless, negative ion plasma is investigated in the framework of the Vlasov–Poisson model. The basic equations are written in a ‘‘new time space’’ by use of a rescaling transformation and, subsequently, solved numerically through a fully Eulerian code. As in the case of a two species plasma, the time-asymptotic regime is found to be self-similar with the temperature decreasing as t22. The numerical results exhibit clearly the physically expected effects produced by the variation of parameters such as initial temperatures, mass ratios and charge of the negative ions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9da72b5385aca9acef598b4f35e9205c Zobrazit plný text záznamu