Mini-five minute fusor

[Carl Smith]

I was inspired by Mark Rowley's five minute fusor and I decided to make one myself. I was able to cut a two inch long piece of one inch diameter borsillicate glass that was .18 inches thick. I used a sparkplug as a feedthrough. I used npt piping and an alcatel 2008 pump as my roughing pump. What amazed me was that I was able extinguish my plasma after a few seconds of pumping my system downg. I only had an AC power supply that was available though so I couldn't get a star mode. The first three pictures show the fabrication of the stainless steel grid.

http://www.youtube.com/watch?v=-LxNMS8E ... e=youtu.be

[Richard Hull]

Carl,

In spite of the very crude effort, you just made the plasma club. It just takes the doing and the showing and you made that grade. I hope you continue to higher levels of achievement.

A DC supply will do a lot to help out and see the glow in a totally different light, so to speak.

Richard Hull

[Carl Smith]

I'm already in the plasma club Richard, I'm conducting research with my large fusor at NC State. I'm just using this smaller fusor as a spectrometer source since I want to monitor plasma coloration and plasma purveyance at different voltages. In my new lab I have a new roughing pump, an turbo pump and deuterium. I'm upgrading my labs power supply from 30 kv at 100 mA to something that has a higher voltage (with the upper limits being around 100 KV).

[Jerry Biehler]

Looks like you are going to put a RGA on there with that IPC-2 pressure converter?

[Carl Smith]

I'm not sure about a pressure controller but I do have a controller for my varian 524 ion gauge hhead. I replaced the electrical pnuematic gate in the lower picture with a hand cranked gate.

[Richard Hull]

Sorry for the mixup Carl. I have made the corrections in the plasma listing. I just did not look far enough back up the list when I added your name.

Richard Hull

[Carl Smith]

I should be getting a diode today so I should be able to rectify my power supply from AC to pulsed DC. If I do get confinement then would this fusor be smaller than Rowley's?

[Richard Hull]

I think the word "fusor" means fusing or neutron producing and proven to be doing fusion to the peer group here that are already doing fusion.

A "demo fusor" is a demo fusor, a fusor act- alike and look-alike. Size issues relate to the type of device in question. A demo fusor, in theory, could be made the size of a golf ball.

Richard Hull

[Carl Smith]

Here's a smaller version of the mini five minute fusor:

http://www.youtube.com/watch?v=hQ-hrlZs ... T6OSA1D_yY

In hindsight I should have made the grid much smaller and I should have added more insulation to the conductor. My power supply was a negatively biased DC source though.

[Mike Veldman]

Here are a couple of pictures of some tiny demo fusors I made up a few years back. The second one is the smallest I made during my quest for tinyness. It's made from a jelly sample jar, about 1 ounce in size, pretty close to the size of a golf ball. The other two are an olive jar and a baby food jar. There are several more pictures of these and their assembly on my FB page if you are interested.

mike

[aka47]

Nice

I like those. It is interesting how small and simple the construction can be.

[Carl Smith]

Mt smallest device had an OD of .375 inches while my grid was less than 1/8th of an inch in diameter

[GRMaura]

I like the design of your fusor can I ask you some questions pertaining to the glass it made out of and what temp and pressure it at