Search found 2261 matches

by hanelyp
Thu Jan 10, 2008 6:42 pm
Forum: Theory
Topic: Virtual Polywell
Replies: 468
Views: 195454

I thought you want to have the electrons spend most of their time in the wiffleball. If there's too much leakage, even with recirculation, the ions are going to go somewhere other than towards the middle. You need an electron population inside the magrid to produce the electric potential which conf...
by hanelyp
Wed Jan 09, 2008 4:02 am
Forum: General
Topic: make your own vacuum tubes?
Replies: 2
Views: 6350

Roll your own cathode tubes

Along the same theme, Roll your own cathode tubes.
via http://blog.makezine.com/archive/2008/0 ... e_tub.html
http://www.sparkbangbuzz.com/crt/crt6.htm
Follow the home links at the bottom for more cool stuff.
by hanelyp
Mon Dec 31, 2007 12:44 am
Forum: Design
Topic: polymer hyperconductors
Replies: 5
Views: 9993

After posting that I spotted other stuff on superconductors.org which suggests they don't always do a good job on checking the credibility of the reference. Still lots of good info if you can sort out the occasional garbage.
by hanelyp
Sun Dec 30, 2007 3:21 am
Forum: Design
Topic: polymer hyperconductors
Replies: 5
Views: 9993

polymer hyperconductors

Browsing around I spotted http://superconductors.org/ultra.htm which quotes from http://www.ultraconductors.com/primer.html Ultraconductors™ are patented materials being developed for commercial applications. They are made by the sequential processing of amorphous polar dielectric elastomers. They e...
by hanelyp
Thu Dec 20, 2007 6:38 pm
Forum: Theory
Topic: Novice configuration WB7-8 questions
Replies: 9
Views: 9068

Uniform tessilations on a sphere aren't that hard, within limits. Take a look at http://www.mathpuzzle.com/Fairdice.htm . For a number of those polyhedrons, including the icosahedron, place a magnet ring on a face, field return faces on the vertices, additional cusps on the edges between kissing mag...
by hanelyp
Tue Dec 18, 2007 8:13 pm
Forum: Theory
Topic: Novice configuration WB7-8 questions
Replies: 9
Views: 9068

Re: Novice configuration WB7-8 questions

... 1. My reading of the text leads me to believe that the hoop/rings will be replaced: "but would not use circular coils, rather they will use coils that follow the polyhedral configuration..." ... -Dave I haven't seen any plans to actually do that, but it might have advantages. It would also be m...
by hanelyp
Tue Dec 18, 2007 7:45 pm
Forum: Theory
Topic: Boron, isotopes, 3He
Replies: 8
Views: 5892

He3-He3 fusion is a documented aneutronic reaction, but like boron-proton more difficult than the reactions involving deuterium. The boron-proton collisions at an angle would produce few reactions, but still scatter, with all the losses that produces. I agree that boron 10 is probably not a viable f...
by hanelyp
Sun Dec 16, 2007 11:49 pm
Forum: Theory
Topic: Boron, isotopes, 3He
Replies: 8
Views: 5892

Boron, isotopes, 3He

Several connected mini topics. - Given that boron proton fusion works in the polywell, I'm assuming that 3He-3He fusion will also work. - There have been several mentions of a resonance energy in boron-proton fusion cross section. Very handy given a near mono-energetic plasma, except that collisions...
by hanelyp
Thu Dec 13, 2007 5:33 pm
Forum: Theory
Topic: magrid configuration brainstorming
Replies: 632
Views: 269119

Gotta remember that those things are going to intercept alpha's like crazy if they aren't in the shadow of the coils, though. It'll be a trade-off, I guess. Note I said screens, not plates. I figure getting alpha interception by the screens down to ~10% or less. Getting alpha interception by the co...
by hanelyp
Tue Dec 11, 2007 5:47 pm
Forum: Theory
Topic: magrid configuration brainstorming
Replies: 632
Views: 269119

electron reflector screen

Another idea to chew on, a negatively charged reflector screen surrounding the positively charged magrid. Electrons leaking out from the central well would be reflected back by the electric field rather than having to follow a magnetic field line around. Should open up volume for support structure a...
by hanelyp
Sun Dec 09, 2007 9:08 pm
Forum: Theory
Topic: POPS Paper
Replies: 33
Views: 24159

Adding non-reactant bulk is in my opinion a loosing proposition. More mass to be heated and to radiate. If your containment and drive system can handle the extra mass, I'm thinking more reactant is a better bet. More pressure and more reactant density to drive reaction rates.
by hanelyp
Sat Dec 08, 2007 9:23 pm
Forum: Theory
Topic: Bismuth as a fusion catalyst? Wikipedia weirdness
Replies: 13
Views: 12953

catalyzing the P-P reaction

It might help to understand a bit more about the P-P reaction. The direct P-P reaction is painfully slow because it requires one of the protons to beta decay (weak force, slow) into a neutron while in range of the other proton(strong force). With the introduction of certain isotopes, such as carbon1...
by hanelyp
Fri Dec 07, 2007 6:43 pm
Forum: Theory
Topic: magrid configuration brainstorming
Replies: 632
Views: 269119

Simon, I'm not trying to say it strictly is a Penning trap, but that it uses features from them, specifically to recapture the electrons that escape through the mirrors. Thanks for the link, it does sound like it connects with my latest design. I wasn't previously aware of plasma drift in mirror mac...
by hanelyp
Thu Dec 06, 2007 7:35 pm
Forum: Theory
Topic: magrid configuration brainstorming
Replies: 632
Views: 269119

My latest configuration brainstorm

A hybrid polywell simple mirror and tandem Penning trap. http://www.splitreflection.com/~cal/pics/pmirror2.png Electrons emitted just inside negatively charge reflector grids (light blue) at each end rush through opening in positive charged coils (red) and into core towards virtual electrode at the ...