Search found 39 matches

by Patrick Lindecker
Tue Jan 21, 2020 12:21 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electrostatic lens sizing
Replies: 1
Views: 319

Re: Electrostatic lens sizing

Hello to all,

I fixed several bugs of the rev. A version. So here is the Rev. B version:
http://f6cte.free.fr/Electrostatic_lens ... _Rev_B.pdf

Patrick Lindecker
by Patrick Lindecker
Sat Jan 18, 2020 3:52 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electrostatic lens sizing
Replies: 1
Views: 319

Electrostatic lens sizing

Hello to all,

For those who need to size electrostatic lenses, the following paper can, possibly, be of some interest for them:
http://f6cte.free.fr/Electrostatic_lens ... _Rev_A.pdf

Patrick Lindecker
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: 20
Views: 980

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: 20
Views: 980

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: 20
Views: 980

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: 2802

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: 1985

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: 2749

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: 18087

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...