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- Title
Dynamics of an Erupting Arched Magnetic Flux Rope in a Laboratory Plasma Experiment.
- Authors
Tripathi, S.; Gekelman, W.
- Abstract
A laboratory plasma experiment has been built to study the eruption of arched magnetic flux ropes (AMFRs) in the presence of a large magnetized plasma. This experiment simulates the eruption of solar AMFRs in two essential steps: i) it produces an AMFR ( n=6.0×10 cm, $T_{\rm e} = 14~\mathrm{eV}$, B≈1 kilo-gauss, L=0.51 m) with a persistent appearance that lasts several Alfvén transit times using a lanthanum hexaboride (LaB) plasma source, and ii) it generates controlled plasma flows from the footpoints of the AMFR using laser beams. An additional LaB plasma source generates a large magnetized plasma in the background. The laser-generated flows trigger the eruption by injecting dense plasma and magnetic flux into the AMFR. The experiment is highly reproducible and runs continuously with a 0.5 Hz repetition rate; hence, several thousand identical loop eruptions are routinely generated and their spatio-temporal evolution is recorded in three-dimensions using computer-controlled movable probes. Measurements demonstrate striking similarities between the erupting laboratory and solar arched magnetic flux ropes.
- Subjects
MAGNETIC flux; PLASMA gases; SIMULATION methods &; models; SPACE probes; ASTROPHYSICS; LANTHANUM hexaboride
- Publication
Solar Physics, 2013, Vol 286, Issue 2, p479
- ISSN
0038-0938
- Publication type
Article
- DOI
10.1007/s11207-013-0257-0