TY  - CONF
AU  - Soltwisch, H.
AU  - Kempkes, P.
AU  - Mackel, F.
AU  - Stein, H.
AU  - Tenfelde, J.
AU  - Arnold, L.
AU  - Dreher, J.
AU  - Grauer, R.
TI  - FlareLab: early results
JO  - Plasma physics and controlled fusion
VL  - 52
IS  - 12
SN  - 1361-6587
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2015-03405
SP  - 124030 -
PY  - 2010
AB  - The FlareLab experiment at Bochum University has been constructed to generate and investigate plasma-filled magnetic flux tubes similar to arch-shaped solar prominences, which often result in coronal mass ejections (CMEs). In its first version, the device has been used to reproduce and extend previous studies of Bellan et al (1998 Phys. Plasmas 5 1991). Here the plasma source consists of two electrodes, which can be connected to a 1.0 kJ capacitor bank, and of a horseshoe magnet, which provides an arch-shaped guiding field. The discharge is ignited in a cloud of hydrogen gas that has been puffed into the space above the electrodes. In the first few microseconds the plasma current rises at a rate of several kA µs−1, causing the plasma column to pinch along the guiding B-field and to form an expanding loop structure. The observed dynamics of the magnetic flux tubes is analysed by means of three-dimensional MHD simulations in order to determine the influence of parameters like the initial magnetic field geometry on magnetic stability. At present, FlareLab is redesigned to mimic a model that was proposed by Titov and Démoulin (1999 Astron. Astrophys. 351 707) to investigate twisted magnetic configurations in solar flares.
T2  - 37th European Physical Society Conference on Plasma Physics
CY  - 21 Jun 2010 - 25 Jun 2010, Dublin (Ireland)
Y2  - 21 Jun 2010 - 25 Jun 2010
M2  - Dublin, Ireland
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000286181100031
DO  - DOI:10.1088/0741-3335/52/12/124030
UR  - https://juser.fz-juelich.de/record/201100
ER  -