Archived - Fusor test pictures

Current images of fusor efforts, components, etc. Try to continuously update from your name, a current photo using edit function. Title post with your name once only. Change image and text as needed. See first posting for details.
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Andrew Seltzman
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Archived - Fusor test pictures

Post by Andrew Seltzman » Thu Mar 25, 2004 4:16 pm

Here is a picture from my latest test. More are pictures are at:
http://www.rtftechnologies.org/physics/fusion.htm
This run is at -1.5kv.

Andrew Seltzman
http://www.rtftechnologies.org
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Re: Fusor test pictures

Post by Andrew Seltzman » Sun Mar 28, 2004 11:17 pm

Here is the entire assembly

Andrew Seltzman
http://www.rtftechnologies.org
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Archived - Fusor test pictures - update

Post by Andrew Seltzman » Tue May 11, 2004 6:46 pm

Here are the latest pictures from my fusor runs; the best vacuum so far is about 30 microns. The heavy copper spiral grid worked well at -6kv, however it melted shortly due to copper’s lower melting point. A new spiral grid is in construction.

Andrew Seltzman
www.rtftechnologies.org
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test12-plasma1.JPG
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test10-plasma1.JPG
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Mark Rowley
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Re: Fusor test pictures - update

Post by Mark Rowley » Tue May 11, 2004 9:49 pm

What was the diameter of your spiral grid ? The poisser looks much hotter and dense than in the traditional sphere grid. Are both photos operating at the same vacuum and voltage ?

Mark Rowley

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Re: Fusor test pictures - update

Post by Andrew Seltzman » Tue May 11, 2004 11:51 pm

The spiral grid was 0.75” in diameter, vacuum: 50 mTorr, -6kv.
When run the spiral grid (1/8” OD copper tube) heated up until it was red and then melted. When it was cool the poisser was well defined.

The spherical grid is 1” in diameter, vacuum: 25-30 mTorr, -3.5kv.
The spherical grid (woven fine gauge platinum wire) will remain cool when run at -3.5kv but produces a fairly diffuse poisser. If run at -6kv the grid will become white hot but no poisser will be visible.

Andrew Seltzman
www.rtftechnologies.org
Andrew Seltzman
www.rtftechnologies.org

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Fusor test pictures - update2

Post by Andrew Seltzman » Sun Jun 20, 2004 2:08 am

This is the new spiral grid. It is made out of a nickel-silver brazing rod. Grid voltage was -7.5kv, vacuum was 30mtorr.

At this stage ion beam damage was occurring. A solid shield panel has been added and ion beams are directed into it using steering magnets.

Andrew Seltzman
www.rtftechnologies.org
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test16-ion-heat1.JPG
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test16-plasma1.JPG
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