Fusor Forums

>does the the "positive" terminal of the filament need to be at -100V and the "negative" terminal at >-85V? In my opinion, strictly speaking yes it will better to have around -100 V (so to not disturb the electric field), but if the filament is very small compared to the anode and the cathode, the e...

Erratum:

At standard pressure, the flow of electrons would be almost nil, due to collision with atoms and molecules (neutrals). You must have a level of vacuum so that electrons have a very low probabibility to collide neutrals. See https://en.wikipedia.org/wiki/Mean_free_path

Patrick Lindecker

Hello Arun and all, For about filament and for information, I wrote a paper in French for a Ham magazine, with an analysis of the filament and its ability to supply electrons. The link is: http://f6cte.free.fr/Etude%20d'un%20recepteur%20a%20un%20seul%20tube%20diode%20rev.%20B.pdf Note 1: the speed d...

Hello Dennis, I have a doubt about patents in USA. It seems possible to patent ideas. Do you confirm? This is not possible here (France and surely Europe). You need a "proof of concept". You cannot patent ideas. I read the patent. The author suggests that he is able to produce 1E6 teslas (with toroi...

Hello, For the ones interested by fusions in a magnetic bottle, I have issued a paper, for which abstracts and download addresses are: • In English The goal of this presentation (built around a simulation) is to describe a fusion reactor based on a magnetic bottle using magnetic confinement for elec...

Hello Steven, It would be more easy to understand with a diagram. All this is a bit fuzzy. I understand that you want to create a "Biconic cusp" (2 solenoides with an inverse current so magnetic fields in opposite direction). I suppose that you are going in some way not described, to inject a plasma...

Hello John, Thanks for the information. I agree that the diamagnetic field can be neglected, but the space charge is fondamental if your plasma is not neutral and I think it's the goal here to dissociate D2 molecules in ions. The space charge is an expanding pressure which is in equilibrium with the...

Thanks Michael and Richard for your recommandations.

Patrick Lindecker

Hello Michael, Thanks for your complete answer. It's not really for a Fusor but I study (by simulation) the following problem: when you inject electrons (to get a negative potential with the electrons cloud) in a set of magnetic mirrors (to avoid the "cusps" of the "biconic cusps" devices), if the e...

Hello Michael, >It's really a shame there isn't more effort on pulsed fusors. Speaking of pulse, do you know what are, at the moment, the approximative minimum limits of time during which a pulse can be controlled (microsec? nanosec?), and precisely: * in case of a magnetic field pulse, what is the ...