Jena 2013 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 11: Poster: Niedertemperaturplasmen

P 11.5: Poster

Mittwoch, 27. Februar 2013, 16:30–18:30, Poster EG

Parameter space analysis of magnetic reconnection and applicability in laboratory devices — •Kian Rahbarnia, Adrian von Stechow, Hannes Bohlin, Olaf Grulke, and Thomas Klinger — Max Planck Institute for Plasma Physics, EURATOM Association, Wendelsteinstr. 1, 17491 Greifswald, Germany

In magnetized plasmas the microscopic quick rearrangement of magnetic topologies can lead to changes of macroscopic quantities such as plasma flows and particle energies. This so-called magnetic reconnection has been observed in many astrophysical objects and its dependence on plasma parameters has been studied for several years in great detail. Especially for investigating magnetic reconnection in laboratory devices, e.g. in low-temperature or fusion plasmas, it is essential to distinguish between the different reconnection regimes (collisional/collisionless, single/multiple X-line, etc.). In this work based on common reconnection theories such as the Sweet-Parker and Petschek model, a set of dimensionless parameters are identified and their relation to plasma parameters like density, temperature, collision rates and length scales is studied. A detailed phase space analysis based on characteristic reconnection parameters provides a deeper understanding of transitions between magnetic reconnection regimes and relates laboratory plasma investigations to space plasma observations. The results will be supported by measurements in the linear low-temperature plasma device VINETA II.