Talk-Polywell.org

So has Polywell even proved if it has two neutrons to rub together? It comes down to a pretty simple yes or no .... neutrons or not? How many "peers" need to stand around the instruments and agree on that? "Nuancing the neutrons" seems to be the business of big government fusion programs, something ...

A rugby foot ball is prolate (spheroid).

A discus is oblate (spheroid).

http://en.wikipedia.org/wiki/Spheroid

An interesting idea though ... and then rotate the fields at some enormous rate (about the geometric axis) to "eliminate" four of the point cusps and four of the line/point cusps?

The collisionless limit is actually where turbulence is the most likely to dominate. In fluids, for instance, viscosity is what damps turbulence. The drivers are anything nonlinear. In fluids, that's usually convection. In plasmas, there are many nonlinearities. Any nonlinearity will cascade the tu...

Sounds to me like the whole thing is getting tied up in the usual government bureaucratise, waffle words, endless shuffling of papers around desks and the whole gambit that has made tokomak fusion such a boondoggle. Regardless of the physics success or not, the interesting science and technical poss...

Spherical fiber composite pressure vessels produced from equivalent sized shell sections could be trucked and built up on site ... will need bit of work on flange/seal design. Could use hemispheres or even six similar geometry sections as for the polyhedral stereographic projection of the Magrid ont...

So proton ion gun(s) and boron-11 ion gun(s) seem like a possible solution for the fuel mixing/input rate?

Some kind of feed-thru for the cathodes as they ablate maybe? ... or simple change out rotation type of replacement using multiple injection guns?

The fields outside the Magrid have to be consistent with the Faraday cage that is located out there, "far" from the Magrid, but close to the vessel wall. This cage allows for adjustment (i.e. control) of voltage potential in the far-field from the Magrid. It is, IMO, a very simple but clever innovat...

Might be helpful?

http://brontek.com/?page_id=7

Used for B11 doping of semi-conductors, via a sputtering process.

kcdodd: I've thought a bit more about this tension component and I think the way you've set it up with a mesh of discrete current loops lying upon the surface actually has this term accounted for. Since the momentum equation for small velocities reduces simply to grad P = JxB and since the current l...

kcdodd: hey, that's a great first cut result ... we're still on track I think. Did you include for the magnetic surface tension force, i.e. tangential to bag surface as well? Or just a simple balance of normal forces, plasma pressure internal versus magnetic pressure external. The magnetic tension f...

.... and a sharp question begs a sharp answer.

I would suggest expressing the currents not as the currents along the edges of the mesh, because then you have to worry about divergence of the current. I would do the calculation in terms of current loops in the mesh elements. Divergence-free currents are guaranteed, the current in any edge (if yo...

Edit: eliminated erroneous text

kcdodd has pointed out the mid-point singularities earlier in the thread. These mid-point singularities are very, very interesting and not what anyone was expecting. On the surface of the sphere, they appear to be saddle points in terms of field line topology but minimums of field strength. Moving r...

tombo: You gentlemen are working this math at a level way above my head, but: I would like you to go back and double check to make sure that you are not engaged in a very sophisticated exercise in “begging the question.” I.e. you assumed a sphere to begin with and now your result is a sphere. The sp...