Electron Recirculation through different Cusps revisited
Posted: Tue Mar 23, 2010 2:41 am
There has been little in the Theory forum for a while, so I decided I would revisit an old topic, and wander into some vague and wild speculations. There has been a near concinsence here that electron recirculation occurs through the same cusp that the electrons exit from. Consider the picture on page 5 of this link-
http://www.askmar.com/Fusion_files/2008 ... isited.pdf
- which shows the burn marks on the outside faces of the perminate magnets of WB1. Also, I have seen in my demo fusor with perminate magnets in a similar arangement the plasma/ glow discharge wraping around the magnets and hitting the outside face where one of the poles are. How this compares to the conditions in which a Wiffleball may exist (internal field compressed and exterior field bloated) which would push the external field closer to the walls; and on the opposite side,I suspect that WB1 did not have a positive potential on the magnets (?), so it would be less attractive to the electronsand I would expect the electrons would have higher orbits. The contribution of these two opposing conditions may result in conditions similar to a Wiffleball (in terms of preferred cusp reentry) with cusp flows similar to the electromagnet powered machines, like WB2,3,4,6,7, etc. The percentage of electrons recirculating around between cusps is enough to be visualized and to burn the permainate magnet surface. Wheather this pathway is a significant percentage of the total is uncertain. I speculate that the higher energy escaping electrons (that are not very near the centerline of the cusps where the field line curvature is approaching infinity) might be more likely to take this route , as opposed to those electrons that are stoped and fall back through the same cusp due to the magrid positive potential. I would not expect the ions to show this behavior with positive magrids, and thier greater inertia. They would be be accelerated away from the magrid once outside, and if thay remained traped on a magnetic field line thay would orbit much (?) further out. But if there is enough space some of the least energetic ions might orbit back into the magrid through another cusp at the same energy that they left (not nessisarily good, though it does stimulate some thought).
If there is a second magrid outside the first, the 'external' magnetic field (outside the inner magrid) would not be as bloated. There might even be some increased compression/ strength on the internal field. If arranged properly the external magrid might be in the shadow of the first, and effectively increase the strength of the internal field. Could it possibly alter the size/ pinching of the cusps?
The outer magrid could be tuned to perhaps recirculate ions much as the electrons are recirculated by the inner magrid (any electrons reaching this height are already considered lost). This might conserve some of the escaping ions, though I don't know if it would effect the energy balance. Despite this though, it might give a two stage trapping mechanism and increase the density gradiant so that higher densities can be maintained inside the inner/ primary magrid without reaching the critical external density that could lead to arcing. The external magrid would also serve as the first (weak) power harvesting direct conversion grid.
In my convoluted brain I can even see a layering of containment . If ions and/or electrons accumilate in the areas of the cusps between the magrids, there may be knobs that can be used to create neutral or charged plasmas in these regions. Overall containment, trapping factors, and confusing interactions might be possible. Taking it to the extream there might even be the possibility of having multiple fusion cores in a matrix of magrids. The sphericity of all but the central core would suffer, but the complexity might be conterbalanced by better overall containment, density, and control (now I am getting really silly). Supporting and shielding the various support structures would be interesting. In some ways this might be similar to the POPS reactor drawing that had many cores clustered together in tubes, these presumably improved effective containment in at least one axis ( charged particles that were leaving one core region could travel to the next core in line). Imagine clustering magrids in layers like an onion, of string them like peas in a pod.
Dan Tibbets
http://www.askmar.com/Fusion_files/2008 ... isited.pdf
- which shows the burn marks on the outside faces of the perminate magnets of WB1. Also, I have seen in my demo fusor with perminate magnets in a similar arangement the plasma/ glow discharge wraping around the magnets and hitting the outside face where one of the poles are. How this compares to the conditions in which a Wiffleball may exist (internal field compressed and exterior field bloated) which would push the external field closer to the walls; and on the opposite side,I suspect that WB1 did not have a positive potential on the magnets (?), so it would be less attractive to the electronsand I would expect the electrons would have higher orbits. The contribution of these two opposing conditions may result in conditions similar to a Wiffleball (in terms of preferred cusp reentry) with cusp flows similar to the electromagnet powered machines, like WB2,3,4,6,7, etc. The percentage of electrons recirculating around between cusps is enough to be visualized and to burn the permainate magnet surface. Wheather this pathway is a significant percentage of the total is uncertain. I speculate that the higher energy escaping electrons (that are not very near the centerline of the cusps where the field line curvature is approaching infinity) might be more likely to take this route , as opposed to those electrons that are stoped and fall back through the same cusp due to the magrid positive potential. I would not expect the ions to show this behavior with positive magrids, and thier greater inertia. They would be be accelerated away from the magrid once outside, and if thay remained traped on a magnetic field line thay would orbit much (?) further out. But if there is enough space some of the least energetic ions might orbit back into the magrid through another cusp at the same energy that they left (not nessisarily good, though it does stimulate some thought).
If there is a second magrid outside the first, the 'external' magnetic field (outside the inner magrid) would not be as bloated. There might even be some increased compression/ strength on the internal field. If arranged properly the external magrid might be in the shadow of the first, and effectively increase the strength of the internal field. Could it possibly alter the size/ pinching of the cusps?
The outer magrid could be tuned to perhaps recirculate ions much as the electrons are recirculated by the inner magrid (any electrons reaching this height are already considered lost). This might conserve some of the escaping ions, though I don't know if it would effect the energy balance. Despite this though, it might give a two stage trapping mechanism and increase the density gradiant so that higher densities can be maintained inside the inner/ primary magrid without reaching the critical external density that could lead to arcing. The external magrid would also serve as the first (weak) power harvesting direct conversion grid.
In my convoluted brain I can even see a layering of containment . If ions and/or electrons accumilate in the areas of the cusps between the magrids, there may be knobs that can be used to create neutral or charged plasmas in these regions. Overall containment, trapping factors, and confusing interactions might be possible. Taking it to the extream there might even be the possibility of having multiple fusion cores in a matrix of magrids. The sphericity of all but the central core would suffer, but the complexity might be conterbalanced by better overall containment, density, and control (now I am getting really silly). Supporting and shielding the various support structures would be interesting. In some ways this might be similar to the POPS reactor drawing that had many cores clustered together in tubes, these presumably improved effective containment in at least one axis ( charged particles that were leaving one core region could travel to the next core in line). Imagine clustering magrids in layers like an onion, of string them like peas in a pod.
Dan Tibbets
)