There are actually two videos to view:

Video 1

“This simulation of a current filament in a plasma focus fusion device shows the outward motion of a shock wave (black density line) and its reflection back from a neighboring filament, disrupting it before magnetic fields could pinch it to high density.”

Video 2

“This simulation of a current filament in a plasma focus fusion device shows the outward motion of a shock wave (black density line) and its reflection back from a neighboring filament. Because of the greater spacing to the neighbor, there is enough time for magnetic fields to pinch it to high density. But that process will be visible only in upcoming 2-D simulations that show the motion of the filament. Stay tuned!
”

(Simulations generated by Focus Fusion Society-LPP team of Dr. Warwick Dumas, Dr. John Guillory and Eric Lerner)