Search found 14 matches

by Kade
Thu Jan 28, 2010 10:16 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Videos of crimzon doughnut formation.
Replies: 20
Views: 7098

Re: Videos of crimzon doughnut formation.

<t>Chris<br/> Yes analysing the back EMF if you have some equipment would be a much better way to get a full story, especialy if you have a second stud or patch electrode positioned a bit around from the one used to input pertubations (could provide for calculating transfer functions).<br/> I imagin...
by Kade
Thu Jan 28, 2010 12:56 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Videos of crimzon doughnut formation.
Replies: 20
Views: 7098

Re: Videos of crimzon doughnut formation.

<t>Chris,<br/> I wonder then, if you may be able to install an insulated stud or surface on either the upper or lower end plate (positioned at about the radius of the toroid) that you could hold at either a positive potentional or a pulsing potential,. This may provide insight as to whether you do h...
by Kade
Tue Jan 26, 2010 11:57 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Videos of crimzon doughnut formation.
Replies: 20
Views: 7098

Re: Videos of crimzon doughnut formation.

Chris
are the end plates now isolated from the central electrode?
by Kade
Sat Jan 16, 2010 9:35 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Neutron Coincidence Detection
Replies: 31
Views: 7706

Re: Neutron Coincidence Detection

<t>John<br/> What you are describing sounds very interesting.<br/> Do you mean that the lead reduces the neutron count more than the low Z slot? it seems as if this is what should happen rather than neutrons being blocked by the lead.<br/> Or are you using a secondary reaction of neutron interaction...
by Kade
Tue Jan 05, 2010 7:31 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Inverter Microwave for Ion Source RF
Replies: 12
Views: 9902

Re: Inverter Microwave for Ion Source RF

<t>Thanks Doug.<br/> I did some calcs and found the cyclotron diameter to be about 4.3 mm at 2.45 ghz.Edit: this calc needs to be re-checked!.<br/> Nice improvement to the ion sources given in the paper you referenced previously.<br/> Thanks again.<br/> Kevin.<br/> <br/> Edit: ( still fumbling in th...
by Kade
Tue Jan 05, 2010 6:15 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Inverter Microwave for Ion Source RF
Replies: 12
Views: 9902

Re: Inverter Microwave for Ion Source RF

<t>Doug<br/> I have been studying your ion source, and am a bit puzzled by the apparent direction of the magnetic field and would like some clarification please.<br/> It seems from the photographs and the arrangement of the yoke, that the flux is running parallel to the direction of ion flow, is thi...
by Kade
Sun Jan 03, 2010 9:25 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: MAST and JET images, versus my "epitrokotron"
Replies: 15
Views: 6336

Re: MAST and JET images, versus my "epitrokotron"

<t>What seems to be the most telling observation in Chris's experiment to me is not the color of the glow at all, since that will only depend on the background gas anyway,it is the radius of the glowing torus in combination with the 0.15T B field. <br/> The .04m radius (assuming this visible trace i...
by Kade
Sat Jan 02, 2010 9:40 pm
Forum: Images du Jour
Topic: Archived - EXP: A New Year's treat; Crimzon doughnuts.
Replies: 33
Views: 14684

Re: EXP: A New Year's treat; Crimzon doughnuts.

OK, got it now I think!.
The surface of the Teflon exposed to the ions, will take on a positive charge effectively becoming another anode region.
- Kevin
by Kade
Sat Jan 02, 2010 8:23 pm
Forum: Images du Jour
Topic: Archived - EXP: A New Year's treat; Crimzon doughnuts.
Replies: 33
Views: 14684

Re: EXP: A New Year's treat; Crimzon doughnuts.

<t>The Teflon tape result is interesting given that the static permittivity is about 2* the vaccum permittivity, and should not have eliminated the electric field, only the electron conductance in the insulated region, unless I have misunderstood what's going on (quite possible at this stage).<br/> ...
by Kade
Sat Jan 02, 2010 6:56 pm
Forum: Images du Jour
Topic: Archived - EXP: A New Year's treat; Crimzon doughnuts.
Replies: 33
Views: 14684

Re: EXP: A New Year's treat; Crimzon doughnuts.

<r>Chris, great experiment, nice pictures.<br/> I wonder if the apparent "volume" of the torus, may be due to the time exposure in combination with the radial instability of the ions as shown by the simulation by dave cooper ? <br/> <URL url="http://www.fusor.net/board/download_thread.php?site=fusor...