Hypothesis on Electron and Ion Behavior Inside the Polywell.

Discuss how polywell fusion works; share theoretical questions and answers.

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mattman
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Hypothesis on Electron and Ion Behavior Inside the Polywell.

Postby mattman » Mon Nov 01, 2010 4:39 am


BenTC
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Postby BenTC » Mon Nov 01, 2010 2:12 pm

Only had time to read it once and a quick thought... but it seemed that only the magnetic mirror effect was used to explain how electrons recirculate, slowing down and reversing direction when outside the magrid coils. While the magnetic mirror (and whiffle ball) effect keeps the majority of electrons inside, I thought that when one leaks out, it is mainly (only?) the positive charge held on the coils that causes the electron to return.
In theory there is no difference between theory and practice, but in practice there is.

D Tibbets
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Postby D Tibbets » Mon Nov 01, 2010 4:01 pm

To error is human... and I'm very human.

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Postby kcdodd » Mon Nov 01, 2010 6:10 pm

Carter

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Postby chrismb » Mon Nov 01, 2010 6:22 pm

mattman,

I think it is strange that your discussion doesn't include mention of a) the Brillouin limit, b) grad B drift [as per Dan's comments], c) inertial drift (across ExB vector), d) diamagnetic drift and e) ambipolar diffusion chasing after differential [q/m] drift currents.

So I think you might be trying to re-invent some basic physics here. That's not necessarily a Bad Thing, but it would be better to put it all into a context alongside some standard physical descriptions. If you are not familiar with a-to-e then each are easy concepts to pick up from standard texts, but it is the complexity of their mutual behaviour that is the point of interest here.

I'm sure you may have some valid points embedded in your discussion, but I get to a few paragraphs in and think "but what about.... he's not talking about... &c., &c." so I begin to switch off.

e.g. to me, just speaking for my own perceptions, piling into a discussion about a completely pure electron behaviour without even a hat-tip to ambipolar behaviour kinda makes it ring a bit hollow in substance. I'm not saying you can't make a good discussion from the starting point of looking at electrons alone, but I would expect to see an argument string at the start that leads us to a point which sets the scene as to why we might be reasonably able to gain some insight by considering an analysis of electrons in isolation.

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Postby TallDave » Wed Nov 03, 2010 3:48 pm

n*kBolt*Te = B**2/(2*mu0) and B^.25 loss scaling? Or not so much? Hopefully we'll know soon...

happyjack27
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Postby happyjack27 » Wed Nov 03, 2010 6:14 pm


mattman
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Ok Guys

Postby mattman » Tue Nov 09, 2010 3:07 am

Criticism makes this stuff better.

I am going to read all this and get back to you. Sorry it took so long to respond to this post.

D Tibbets
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Postby D Tibbets » Tue Nov 09, 2010 2:43 pm

To error is human... and I'm very human.

TallDave
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Postby TallDave » Tue Nov 09, 2010 3:22 pm

n*kBolt*Te = B**2/(2*mu0) and B^.25 loss scaling? Or not so much? Hopefully we'll know soon...

happyjack27
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Postby happyjack27 » Tue Nov 09, 2010 4:32 pm


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Postby happyjack27 » Tue Nov 09, 2010 4:45 pm


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Postby quixote » Tue Nov 09, 2010 8:20 pm


happyjack27
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Postby happyjack27 » Wed Nov 10, 2010 4:26 pm


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Postby icarus » Wed Nov 10, 2010 6:34 pm



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