What is this image - is it a plasmoid?

Q:

What is this an image of? 

Hot Plasma Vortex Filaments! This is an actual image of hot plasma vortex filaments pinched together by their own magnetic fields in a plasma focus fusion device. The photo was taken by Winston Bostick & Victorio Nardi with a very fast exposure time - a few nanoseconds.  This is not really an image of the plasmoid, which is tiny--it is the last stage in the formation of the focus that produces the plasmoid.

The picture is actually black and white—the purple color is added purely to make a nice logo.