Bonn 2010 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 3: Poster

EP 3.19: Poster

Montag, 15. März 2010, 17:45–19:00, AKM Foyer

Experimental Investigation of Magnetic Flux Tubes — •Holger Stein, Jan Tenfelde, Philipp Kempkes, Felix Mackel, and Henning Soltwisch — Ruhr University Bochum, Bochum, Germany

In the frame of the FlareLab project an arc-shaped discharge, reminiscent to solar flares, is investigated. Induction probes are employed to determine the different components of the magnetic field. Combining this with information about the plasma parameters (electron density and temperature) and the velocity and width of the flux tubes, the current density profile can be calculated. This additional information is cross-checked by at least two diagnostics, including electrostatic probes, laser interferometry, basic spectroscopy and images from a fast framing ICCD camera. Furthermore, components of the magnetic data indicate frozen magnetic flux in the plasma, which originates from an external guiding field at the plasma source. The aim of this effort is a consistant characterisation of the flux tubes, in terms of force balances.

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