Search found 131 matches

by steve_rb
Mon Jan 28, 2013 3:11 am
Forum: Fusion --- Past, Present, and Future
Topic: The Neutristor
Replies: 8
Views: 5452

Re: The Neutristor

Any chance for getting one of the Adephitech neutron generators manual (preferably DD108)?
by steve_rb
Fri Dec 28, 2012 4:38 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plasma color problem for neutron production?
Replies: 12
Views: 5737

Re: Plasma color problem for neutron production?

<t>I am trying to maintain a pressure difference between plasma chamber and target chamber. Target will be connected to about 50Kv. At this voltage target chamber should be at about 1E-5 to 1E-6 to prevent spark. But plasma need about 1E-1 to 1E-3 in order to be turned on using RF power. I have to h...
by steve_rb
Fri Dec 28, 2012 9:23 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plasma color problem for neutron production?
Replies: 12
Views: 5737

Re: Plasma color problem for neutron production?

<t>Doug<br/> <br/> Great video. I am a little confused about the number of grids you have used and HV connection to grids. Could you please send a hand drawn schematic showing your system with grids and HV connection with the amount of HV written when you had counts.<br/> <br/> I have attached my fi...
by steve_rb
Wed Dec 26, 2012 10:26 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plasma color problem for neutron production?
Replies: 12
Views: 5737

Re: Plasma color problem for neutron production?

<r>H-Alpha paper from Wikipedia says "H-alpha has a wavelength of 656.281 nm. Since it takes nearly as much energy to excite the hydrogen atom's electron from n = 1 to n = 3 as it does to ionize the hydrogen atom, the probability of the electron being excited to n = 3 without being removed from the ...
by steve_rb
Wed Dec 26, 2012 3:55 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plasma color problem for neutron production?
Replies: 12
Views: 5737

Re: Plasma color problem for neutron production?

<t>I used Cu coil around a 3 cm x 5cm quartz tube (chamber) and seems I am getting the first 5 lines of Balmer series. But red line is missing which I think my RF is not strong enough (low Peak to peak voltage) to excite D electrons to higher levels to emit red line spectra.<br/> <br/> I have a ques...
by steve_rb
Wed Dec 26, 2012 3:57 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Plasma color problem for neutron production?
Replies: 12
Views: 5737

Plasma color problem for neutron production?

<t>My fusor is ready and yesterday I succeed on creating my first plasma but color in not pink as it should be. It is more like blue (a bit to light side) and a little purple too. D2 gas is pure (99.999) as it says on the sticker on the bottle. Bottle was stored for about 2 years in the atmosphere t...
by steve_rb
Tue Apr 10, 2012 8:05 am
Forum: Vacuum Technology (& FAQs)
Topic: Edwards AIM-S-NW25 gauge repair
Replies: 1
Views: 1016

Edwards AIM-S-NW25 gauge repair

Anyone has tried to repair this gauge? How to separate the big red housing (red cap) from electronics? Last attempt caused a few minor crack on the thing.

thx
by steve_rb
Sat Mar 17, 2012 8:24 am
Forum: Vacuum Technology (& FAQs)
Topic: Edwards AIM-S-NW25 active gauge no responce?
Replies: 4
Views: 2329

Edwards AIM-S-NW25 active gauge no responce?

I measured input voltage and it is 24 V which is OK but output signal is 1.6 V. I guss at least it should be 1.8 V. Anyone has experiensing with repair of this gauge or is there any electronic schematic around?

Steve
by steve_rb
Wed Feb 23, 2011 7:37 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: RF ion source, modified, with deuterium
Replies: 17
Views: 13187

Re: RF ion source, modified, with deuterium

Spend a few hours trying to do a rough 2D simulation of this Ion source to check how Siglo-2D works. results are attached. Seems at least it can show some sensable results.
by steve_rb
Sun Jul 11, 2010 5:06 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Quartz torch firing, first RF experience
Replies: 8
Views: 4702

Re: Quartz torch firing, first RF experience

<t>morgothian<br/> <br/> For the moment I have almost zero refleted power and I am not worry about it. What I have found lately is the importance of the ignitor. They way I have applied my ignitor is wrong (two copper wire inserted inside the torch from front having a short arc) . For torch to turn ...