Search found 1284 matches

by Frank Sanns
Wed Apr 28, 2004 2:43 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: some mathematical wranglings
Replies: 29
Views: 7835

Re: some mathematical wranglings

<t>Here is a sheet of dropping pressure in the fusor. I deliberately used a 3.5 in wire grid with only minimal wires so I could see the effects. The pressure is from around 1 torr down to 15 mtorr with some star present.<br/> <br/> As the mean free path increases with decreasing pressure, you can se...
by Frank Sanns
Wed Apr 28, 2004 12:08 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plasma Jet
Replies: 5
Views: 2332

Re: Plasma Jet

In my case it was the result of a poor ground. The HV found ground through my TC gauge and vacuum pump. Vacuum gauge read too low after that and had to be replaced. I now have grounding straps on the fusor and that solved the problem.

Frank S.
by Frank Sanns
Wed Apr 28, 2004 12:05 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Large Inner Grid
Replies: 35
Views: 7870

Re: Large Inner Grid

<r>Mark,<br/> <br/> I have made stars with wire grids up to 5" in diameter. The larger inner grids tend to give more diffuse stars and poissors. Adding more wires helps the formation of stars with the larger grids.<br/> <br/> The 3.5" LATTICE grids do not give very good stars. I think this is due to...
by Frank Sanns
Tue Apr 27, 2004 1:04 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Large Inner Grid
Replies: 35
Views: 7870

Re: Large Inner Grid

<t>Mark,<br/> <br/> I have also seen much higher current draws with larger and wider grids. Larger grids have more surface area and thus more ions will flow. At least down to very low pressures then there are too few ions to make a difference.<br/> <br/> My 3.5" inner lattice grid draws more than 10...
by Frank Sanns
Fri Apr 23, 2004 5:15 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: A new way to visualise pulse fusor poisers
Replies: 4
Views: 1928

Re: A new way to visualise pulse fusor poisers

Larry,

Do what I did. Get a piece of X-ray shielding glass. It will attenuate x-rays up to 100 kev by orders of magnitude. I put one in front of my view port to save my good digital camera. It works great.

Frank
by Frank Sanns
Wed Apr 21, 2004 1:24 pm
Forum: Vacuum Technology (& FAQs)
Topic: Duty cycles of pumps
Replies: 2
Views: 1803

Re: Duty cycles of pumps

<t>Mark, <br/> <br/> I have a 1402 pump and when I bought it, it had a burned up motor. It seemed a little difficult to turn so I replaced the motor and rebuilt the pump. After rebuilding the pump, the pump was even harder to turn over. It was even overloading the new 3/4 HP motor. <br/> <br/> The s...
by Frank Sanns
Tue Apr 20, 2004 2:08 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plating grids with Palladium or other metals
Replies: 4
Views: 3402

Re: Plating grids with Palladium or other metals

<r>Hi John,<br/> <br/> Yes, you can plate ceramics and plastic in plating solutions. And guess what the 1st step is in plating the non conductors. You guessed it, put them into palladium chloride. The palladium will start to plate out on the surface of the non conductor. You will not get complete co...
by Frank Sanns
Sun Apr 18, 2004 11:39 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plating grids with Palladium or other metals
Replies: 4
Views: 3402

Plating grids with Palladium or other metals

<t>From another post, several people had emailed me about putting palladium on grids. Here is some info for all. <br/> <br/> There are a many different ways to plate materials. Three common ways are sputtering, vacuum (vapor) deposition, and electrodeposition.<br/> <br/> Sputtering and vacuum or vap...
by Frank Sanns
Sun Apr 18, 2004 3:57 pm
Forum: Interesting Links
Topic: light ion fusion
Replies: 14
Views: 4286

Re: light ion fusion

Thanks Brian. It was JB Braun that I was thinking of. They have hollow spheres that I would prefer. Don't know if I want a one pound solid sphere dangling from my HV feedthough!!!

Frank
by Frank Sanns
Sun Apr 18, 2004 3:13 pm
Forum: Interesting Links
Topic: light ion fusion
Replies: 14
Views: 4286

Re: light ion fusion

<t>Adam,<br/> <br/> Hydrogen isotopes can move right through palladium. Loading the outer few atomic layers will set up a concentration gradient that will cause the hydrogen to move deeper and deeper into the palladium and eventually the entire piece of palladium will become loaded. The reactions fo...