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Registered Member #117
Joined: Fri Feb 10 2006, 05:22AM
Location: WI
Posts: 9
I have access to IEEE Xplore. I searched for ball lightning yielded 45 results in IEEE publications. I also found this link on the IEEE website, unfortunatly the link on the page is broken, but apparently the speach did accually take place. Link!
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Hi all. Recall that "spintronics" has been in the news recently as a way to reduce power dissipation in CPU's and memory.
Also recall that the basic idea is to align the normally random electron spins in a given material (usually iron/chromium nanowires or thin metal layers).
Perhaps ball lightning and other related phenomena might be generated in the lab by manipulating electron spins within a plasma such that the overall structure has an axial alignment in the direction of travel.
It appears that if this is indeed the case, on hitting a dielectric or metal the plasma will dissipate but the majority of the energy stored in the electron spins is transferred across the barrier, reappearing on the other side in a reduced but still active form.
An experiment to try might be to use an array of magnetised iron wires arranged in an x-y grid, so that the resulting corona has a spin alignment. If the discharge is intense enough the plasmoid should form and move off in the direction of least resistance (away from the wires).
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Speaking to my physics prof the other day and he recalled an experiment in 50 Torr argon with indium sputtering. Aluminium was used to line the bell jar. They had a lot of problem with bright luminescent balls that would appear and char the aluminium black. It was a nuisance and never got documented or photographed properly but the nature was never explained.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Yep. I accidentally duplicated this annoying effect when trying to melt some indium alloy in my microwave. Sparks followd by a BIG bright blue-violet fireball that seemed stable for about half a second.
It might be worth using an indium electrode in an intense RF field to duplicate this effect, finally an experiment I can try :)
Alternatively, a pair of indium electrodes underwater?
edit:- Warren Buckles (Senior Technologist, American Superconductor Corp.), 1993, Madison, WI, USA. Email 2000. In 1993 I was testing a superconducting energy storage magnet in my company’s laboratory and accidentally discharged the unit into a metal oxide varistor. The resulting flash–bang was spectacular and yielded a ball of plasma-like material that persisted for several seconds while rising out of the apparatus. I recall the ball being about 300 mm in diameter and blue-white to yellow but such recollections under stress are unreliable. The magnet’s stored energy was about 1 MJ and the varistor had a nominal rating of 10 kJ and was manufactured by Harris in the US. The magnet’s circulating current at the time of the discharge was about 1 kA. As these varistors use a silicon oxide compound as their working element, I find your argument relating to filamentary chains of silicon oxides interesting. -A
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