Three dimensional field lines taken from a volumetric data set in an experiment in which two laser produced plasmas collide. Data was acquired at 30,000 locations in a 3D volume in the LAPD device. Shown are the magnetic fields due to Alfven wave currents.
Isosurfaces of field aligned current from a shear Alfven wave launched using a specialized antenna allowing for arbitrary polarization of the wave. The blue and red surfaces represent current densities of jz=0.5 A/cm^2.
The Large Plasma Research Device (LAPD) is housed at UCLA and users a highly reproducible, magnetized plasma source. The plasma device is operated round-the-clock providing research-grade plasmas at a 1 Hz repetition rate, and having a wide range of possible parameter choices under the user's control.
A Projection of magnetic field lines onto the plane centered z=94.8 cm from the targets. The data were derived from vector magnetic field measurements taken on five planes at distances ranging from 31.5 to 284.4 cm from the targets.
Current streamlines of a shear Alfven wave launched by a helical antenna. The wave magnetic field on a plane orthogonal to the background magnetic field is shown to guide the eye.