On the relevance of magnetohydrodynamic pumping in solar coronal loop simulation experiments
- Institute of Experimental Physics V-Laser and Plasma Physics Group, Ruhr Universitaet Bochum, D-44780 Bochum (Germany)
- Ernst-Moritz-Arndt-Universitaet Greifswald and MPI for Plasma Physics, D-17491 Greifswald (Germany)
A magnetohydrodynamic pumping mechanism was proposed by Bellan [Phys. Plasmas 10, 1999 (2003)] to explain the formation of highly collimated plasma-filled magnetic flux tubes in certain solar coronal loop simulation experiments. In this paper, measurements on such an experiment are compared to the predictions of Bellan's pumping and collimation model. Significant discrepancies between theoretical implications and experimental observations have prompted more elaborate investigations by making use of pertinent modifications of the experimental device. On the basis of these studies, it is concluded that the proposed MHD pumping mechanism does not play a crucial role for the formation and temporal evolution of the arched plasma structures that are generated in the coronal loop simulation experiments under consideration.
- OSTI ID:
- 22072576
- Journal Information:
- Physics of Plasmas, Vol. 19, Issue 7; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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