Deuterium Plasma

13 10 2009

Spent this evening attempting fusion with the Fusor. No bubbles in the detector, but I got these photos of the deuterium plasma:IMG_4278IMG_4277

As you can see it’s a more of a blue color than the air plasma.

The pump is running fantastically… whisper quiet.

I tried for several hours. The main variable is gas flow rate. The more gas, the more current and a brighter plasma.

I may need a higher voltage power supply.

Judging from the reduced PSI of the deuterium bottle, I put a dent in the supply tonight.

All in all it was a good day. Nothing broke. We tool a step forward. I plan to regroup and spend some time working with the air plasma.

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3 responses

13 10 2009
14 10 2009
Dustin

The deuterium plasma should be a red/pink color which makes me suspect you have pump oil backstreaming which will also make it blue or an air leak.

http://www.fusor.net/board/view.php?bn=fusor_images&key=1255486080

The last pik shows the color.

14 10 2009
FAMULUS

Ok. I’m using a brand new diaphragm pump + turbopump, so there should not be any pump oil.

As far as a potential air leak… it’s pulling a deep vacuum 5e-6 torr when I’m not letting deuterium into the chamber so that seems unlikely.

I guess I should take another crack at the RGA to rule out contamination.

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