Gyrofluid simulations of collisionless reconnection in the presence of diamagnetic effects
| Autor: | Francois Waelbroeck, Daniela Grasso, Emanuele Tassi |
|---|---|
| Přispěvatelé: | nldyncpt, Centre de Physique Théorique - UMR 6207 (CPT), Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Université de Provence - Aix-Marseille 1-Université de la Méditerranée - Aix-Marseille 2, Institute for Fusion Studies (IFS), University of Texas at Austin [Austin], Dipartimento di Energia [Torino] (DENERG), Politecnico di Torino = Polytechnic of Turin (Polito), Istituto Sistemi Complessi [ROME] (ISC), Consiglio Nazionale delle Ricerche [Roma] (CNR), Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Université de la Méditerranée - Aix-Marseille 2-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR) |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
History
Electron density Guiding center Gyroradius FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Education Ion symbols.namesake [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] Physics::Plasma Physics 0103 physical sciences Numerical simulations Plasma kinetic equations Fisica del plasma riconnessione magnetica 010306 general physics Physics Condensed matter physics Magnetic reconnection Charged particle Physics - Plasma Physics Computer Science Applications Plasma Physics (physics.plasm-ph) magnetic reconnection diamagnetic effects symbols Diamagnetism Hamiltonian (quantum mechanics) |
| Zdroj: | Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna, August 30-September 3, 2010 info:cnr-pdr/source/autori:Tassi E.; Waelbroeck F.L.; Grasso D./congresso_nome:Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas/congresso_luogo:Varenna/congresso_data:August 30-September 3, 2010/anno:2010/pagina_da:/pagina_a:/intervallo_pagine Joint Varenna-Lausanne Workshop on the Theory of Fusion Plasmas, pp. 012020, Varenna, ITALY, Au 30-Sep 03, 2010 info:cnr-pdr/source/autori:E. Tassi (1); F.L. Waelbroeck (2); D. Grasso (3,4)/congresso_nome:Joint Varenna-Lausanne Workshop on the Theory of Fusion Plasmas/congresso_luogo:Varenna, ITALY/congresso_data:Au 30-Sep 03, 2010/anno:2010/pagina_da:012020/pagina_a:/intervallo_pagine:012020 Journal of Physics: Conference Series Journal of Physics: Conference Series, IOP Publishing, 2010, 260, pp.012020 Journal of Physics: Conference Series, 2010, 260, pp.012020 |
| ISSN: | 1742-6588 1742-6596 |
| Popis: | International audience; The effects of the ion Larmor radius on magnetic reconnection are investigated by means of numerical simulations, with a Hamiltonian gyrofluid model. In the linear regime, it is found that ion diamagnetic effects decrease the growth rate of the dominant mode. Increasing ion temperature tends to make the magnetic islands propagate in the ion diamagnetic drift direction. In the nonlinear regime, diamagnetic effects reduce the final width of the island. Unlike the electron density, the guiding center density does not tend to distribute along separatrices and at high ion temperature, the electrostatic potential exhibits the superposition of a small scale structure, related to the electron density, and a large scale structure, related to the ion guiding-center density. |
| Databáze: | OpenAIRE |
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