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Registered Member #59110
Joined: Mon Apr 11 2016, 04:35PM
Location: Camarillo, California
Posts: 74
I have been working a lot lately on plasma globes/tubes.
This is a video showing the formation of a cool xenon spider. The video is shot at 2000 fps and shows the evolution of the discharge from a more conventional xenon filament discharge to a strange tendril glow. It behaves just like ferrofluid and a magnet.
Registered Member #59110
Joined: Mon Apr 11 2016, 04:35PM
Location: Camarillo, California
Posts: 74
Sulaiman,
Yes arcs in xenon flashtubes are amazing. I have a longer tube form a high power YAG laser that has really fantastic structure when excited with HV AC. This tube also has a prominent after glow that I can't explain.
As far as the filament structure, that curving wavy line I believe Carl Willis is correct when he blames it on convection currents. Of the three gases that I've used in plasma tubes, neon has the least filament structure ven at high pressure, krypton better at 100 torr or so and good old xenon looks fantastic at 50 torr. When you look at the thermal conductivity of these three it's right in line with the effect.
This is the same globe, normal video with some narration.
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Xenon Spider
