Search found 34 matches

by Patrick Lindecker
Sun Dec 01, 2019 9:44 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Efficient way to bombard target with electrons in the 50-100 eV range? (not for fusor)
Replies: 9
Views: 275

Re: Efficient way to bombard target with electrons in the 50-100 eV range? (not for fusor)

>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...
by Patrick Lindecker
Sun Dec 01, 2019 10:35 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Efficient way to bombard target with electrons in the 50-100 eV range? (not for fusor)
Replies: 9
Views: 275

Re: Efficient way to bombard target with electrons in the 50-100 eV range? (not for fusor)

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
by Patrick Lindecker
Sun Dec 01, 2019 9:38 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Efficient way to bombard target with electrons in the 50-100 eV range? (not for fusor)
Replies: 9
Views: 275

Re: Efficient way to bombard target with electrons in the 50-100 eV range? (not for fusor)

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...
by Patrick Lindecker
Mon Oct 14, 2019 11:42 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: dynamic fusor patent, Salvatore Pais
Replies: 16
Views: 2228

Re: dynamic fusor patent, Salvatore Pais

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...
by Patrick Lindecker
Thu Aug 29, 2019 8:01 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Simulation of a fusion reactor using an electrons cloud confined in a magnetic bottle
Replies: 0
Views: 1869

Simulation of a fusion reactor using an electrons cloud confined in a magnetic bottle

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...
by Patrick Lindecker
Tue Jul 09, 2019 10:30 am
Forum: Vacuum Technology (& FAQs)
Topic: Need some help
Replies: 3
Views: 2629

Re: Need some help

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...
by Patrick Lindecker
Sat Jun 01, 2019 9:33 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Fusor without inner grid?
Replies: 17
Views: 17619

Re: Fusor without inner grid?

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...
by Patrick Lindecker
Sat May 11, 2019 5:36 pm
Forum: Images du Jour
Topic: Successful Completion and Operation of the Integrated High Vacuum Test Stand and Micro Propulsion Testing Chamber
Replies: 13
Views: 7907

Re: Successful Completion and Operation of the Integrated High Vacuum Test Stand and Micro Propulsion Testing Chamber

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...
by Patrick Lindecker
Fri May 10, 2019 9:37 pm
Forum: Images du Jour
Topic: Successful Completion and Operation of the Integrated High Vacuum Test Stand and Micro Propulsion Testing Chamber
Replies: 13
Views: 7907

Re: Successful Completion and Operation of the Integrated High Vacuum Test Stand and Micro Propulsion Testing Chamber

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 ...