Search found 8 matches
- Tue Oct 09, 2007 10:58 pm
- Forum: Design
- Topic: Magnetrons vs E guns
- Replies: 13
- Views: 10631
Yep stray ions will be absorbed by the grids or walls. Stray electrons by the walls. Provided they are at high enough energy to be a problem. That adds to the losses. Not a good idea. If the maGrid absorbs ions this can work to an advantage. The ions would be positively charged and so would the maG...
- Tue Sep 04, 2007 10:48 pm
- Forum: Theory
- Topic: Objections from Paul Dietz
- Replies: 15
- Views: 19825
The power lost from electrons to bremsstrahlung is essentially irrelevant*; the electrostatic attraction of the ions to the electrons isn't dependant on electron velocity. This applies to his statement on "hot electrons". As for "power of electron drag" - I have no idea where this notion comes from,...
- Tue Jul 31, 2007 2:20 pm
- Forum: Design
- Topic: decelerating grid
- Replies: 13
- Views: 20549
Collecting at DC has the advantage of not being frequency dependent. DC output or pulsed output. Same collection scheme. I was thinking of having the alphas pass through a ring. Wire would be wound through the ring. The ring would concentrate the magnetic field from the alpha current, and the chang...
- Mon Jul 30, 2007 11:53 pm
- Forum: Design
- Topic: decelerating grid
- Replies: 13
- Views: 20549
If we fed protons and boron nuclei into the reactor in pulses, it could result in outward pulses of alpha particles. Induction (coils) could be used to impede the changes in magnetic field that would accompany the changes in alpha-current, and the coils would become a source of alternating current. ...
- Thu Jul 12, 2007 8:14 pm
- Forum: Fund-Raising
- Topic: Professional Fund-Raiser?
- Replies: 4
- Views: 8057
I don't think it's a very good idea to hire a fund raiser. The money we would spend on a professional fund-raiser would be much better spent on a small polywell with WB-6 like design. My aunt works on fundraising for charities, and she might give some advise for free. In particular she works with ra...
- Sun Jul 08, 2007 2:12 pm
- Forum: Implications
- Topic: Rockets!
- Replies: 48
- Views: 61233
I'm betting some (if not all) of solar electric ion propulsion advocates have heard of the inverse square law. http://nmp.nasa.gov/ds1/tech/sep.html According to this page, using solar powered ion engines they could slowly build speed while in range of the sun. It made an overall velocity change of ...
- Sat Jul 07, 2007 10:47 pm
- Forum: Implications
- Topic: Rockets!
- Replies: 48
- Views: 61233
Ion Engines
There are many designs for electric spacecraft engines. You can read about them here: http://en.wikipedia.org/wiki/Electric_propulsion
All of them are waiting for a suitable power source. Batteries won't do, and people don't like the idea of spaceships with powerful fission reactors flying about.
All of them are waiting for a suitable power source. Batteries won't do, and people don't like the idea of spaceships with powerful fission reactors flying about.
- Sat Jul 07, 2007 3:14 pm
- Forum: Design
- Topic: Small scale experiments?
- Replies: 17
- Views: 23934
Even if this open air depature could create a negative well, it could produce lots of hazardous ozone. Here is a rendering I made of what a polywell with 7 inch outer diameter solenoids would look like in a 24 inch diameter sphere, with a cage with edges measuring 13 inches. http://members.verizon.n...