Talk-Polywell.org

I've been lurking but I still have no idea what you guys are arguing about. But if an alpha has 2MeV anywhere at 0V, it will still have 2MeV any time it is at 0V. And it will have 2.000002MeV any time it is at -1V, and it will have 0eV any time it is at 1MV. And the only place it can end up at -1V w...

Well, as I see it there are only two possibilities for keeping the potential in the outer region within the boundaries of the machine. Either there are ions there to balance the electron's charge, as you say, or the electron density is just not very high outside to begin with. And, like I already s...

Well, as I see it there are only two possibilities for keeping the potential in the outer region within the boundaries of the machine. Either there are ions there to balance the electron's charge, as you say, or the electron density is just not very high outside to begin with. And, like I already sa...

If we could just harness Art's voltage drive for good instead of evil. hehe

If there are no ions, then the Poisson equation says the electrons will produce a potential of about nqd^2/epsilon_0 = 2.5e17*1.6e-19*0.1^2/8.85e-12 = 450 MV. (Check my math!) I think we can agree that we don't want that kind of voltage running around our little reactor, so we had better rather neu...

Yes I don't think it integration error. I think the field itself is weird there.

I have thought about that too. Every coil reinforces the point cusps of the adjacent coils. You can see though that the face coils all point out at the edges, and the corner coils all point in at the edges. They interfere each other on all of the line cusps, and you are left with very week fields th...

I wasn't totally sure what you want plotted. Here are the magnetic field lines of the simulation. The plotting tool only lets me do streamline of magnetic vectors, so I start all the lines in the faces of the coils. In this one there are two vertical sets of start points on the x=1.5 face, at y=0.0 ...

I posted several plots here: http://andromedaspace.com/fusor_matlab.php . It includes a plot of the magnetic field at the top, and further down the page there is a plot of electrons shot directly at the center of the line cusp. I was very surprised when I did this because variation of a few degrees ...

I'm just attempting to make an answer to Art Carlson's conceptual objections against polywell in the absence of experimental data. Which seems the only point to the thread.

If line cusps have the same throughput as point cusps, yes; but I just posted a plot showing that the point cusps are the major loss factor. I just wanted to say that it is really cool how much your picture looks like the picture of the WB7 in operation on the EMC2 website. Clearly, most of the jun...

drmike, or anyone having experience with this, I am having an issue with QNAN apearing in my data. I'm not quite sure why and I have't been able to find any information on what operations actually produce this. Which makes it hard to trace the code producing it. Everything I have tried to reproduce ...

High beta operation squeezes down the width of a cusp to a few gyroradii (rho). Point cusps get sqeezed in two dimensions, line cusps only in one. If there are only point cusps in the machine then the size of the effective hole is a few times rho^2. If there are line cusps, the hole is a few times ...

I did this plot several months back of individual electron trajectories. As you can see the line cusps receive nearly zero flux. Only one path actually penetrated the line cusp from all the trials, it myst hit the cusp directly or the internal structure of the magnetic field funnels any electrons he...

I hope I don't offend you too much with this post Dr. Carlson, or eat too much of my foot haha. My opinion is that it really just comes down to experiment of a specific design. I mean, you could have asked why the wright brothers plane was any better then every other plane ever built that didn't wor...