Other
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spd....31.0266b&link_type=abstract
American Astronomical Society, SPD Meeting #31, #02.66; Bulletin of the American Astronomical Society, Vol. 32, p.822
Other
Scientific paper
Solar prominence eruptions have been simulated in the laboratory using a magnetized plasma gun. Still photographs obtained from two high-speed cameras in a stereographic configuration have been combined to make three-dimensional movies of the evolution of the plasma. The plasmas resemble actual solar prominences, and evolve in a reproducible sequence through three stages. First, initial breakdown forms a main current channel consisting of several filaments. Second, the filaments twist around each other. Third, the entire plasma takes on a helical structure and expands outward. The three-dimensional structure of the plasma has a chirality consistent with the sign of the injected helicity. Plasma behavior has been investigated using various boundary conditions. Most recently, coils generating a vacuum magnetic field straddling the plasma loop have been constructed. Experiments in this configuration show that the vacuum magnetic field delays the eruption of the prominence, as well as limiting the lateral bulging of the plasma loop. The arched flux tube has a minor radius of 5-15 mm and spans 12 cm between footpoints. The major radius is initially 6 cm and then increases to several times this value as the simulated prominence erupts. Typical maximum plasma currents are 60 kA and typical magnetic fields are 1-5 kG. The duration of the experiment is about 7 microseconds. The experiment takes place in a 1.4 m diameter, 2 m long vacuum chamber and uses hydrogen gas.
Bellan Paul M.
Hansen John Freddy
No associations
LandOfFree
Controlling the Dynamics of Laboratory Simulations of Solar Prominence Eruptions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Controlling the Dynamics of Laboratory Simulations of Solar Prominence Eruptions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlling the Dynamics of Laboratory Simulations of Solar Prominence Eruptions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1348557