Search found 76 matches

by Andrew Haynes
Sat Mar 04, 2017 5:24 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

For the area around the electrodes only charged air ions and free electrons will be the only things that will experience the force, this force will only effect the plasma that is contained in the arc. But the question is there any data or formula that predict the thickness of the arc at different ga...
by Andrew Haynes
Sat Mar 04, 2017 8:25 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

Point taken, a question, I'm basing my experiment around this formula Fx = jy*Bz = k(Ey - vx*Bz)Bz = k*Bz^2(Ey/Bz - vs) It's a modified lorentz force for the acceleration of plasma by current and magnetic fields. The formula gives say a result 10newtons, but it obviously doesn't move air that much, ...
by Andrew Haynes
Fri Mar 03, 2017 1:19 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

Ha, on the semi permanent stuff I've splash electrical tape, good to 800v. I'll probable hot glue the exposed wire when I think I'm not going to change or add to that part. Spark gap distance = 8 mm Inductor coil = 3.3mH Inductor capacitor storage = 2.5nF Capacitor bank = 2uF Capacitor voltage = 8.8...
by Andrew Haynes
Wed Mar 01, 2017 9:47 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

Increasing the cap bank made the NST pack up, built this power supply from a MOT and voltage tripler. The noise on the multimeter is belay reading but ever now and then I get a decent reading. The multimeter takes samples about twice a second, I'm missing the spike, I will try to build this peak det...
by Andrew Haynes
Mon Feb 27, 2017 7:11 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

I've built a test rig, which I will be getting all my data from. I'll be only making small changes to it. So far a 2.0uF bank is discharge across approx 10mm spark gap. The voltage from the multimeter which is coming from 3 turn of wire around the plastic tube, is fluctuating around 3-4mV, when the ...
by Andrew Haynes
Thu Feb 23, 2017 5:28 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

The picture below is what I'm trying to create over the coming months. A chemical reaction creates ionized gas flow, that goes down a electrical insulation tube, spark gap fire to keep and increase the charge density, a radial magnetic field is created that cuts at right angles to copper wire induct...
by Andrew Haynes
Wed Feb 22, 2017 3:53 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

I was slowly getting that ready, after a post with different DMM readings of a copper wire around the tube(which is going to be replaced with a more substantially inductor, i'm slowly getting to a whole heap of things), with enough data to make theory of operation, I was going to ask what measuremen...
by Andrew Haynes
Wed Feb 22, 2017 2:59 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Plasmagun/railgun for Stelarate
Replies: 31
Views: 16786

Re: Plasmagun/railgun for Stelarate

A range of areas, the energy stored in a magnetic field with reconnection events, self generated current and the accompanying magnetic field of plasma that has velocity. The effects of plasma and magnetic field with a imputed voltage source.
by Andrew Haynes
Mon Feb 20, 2017 2:35 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Understanding current draw on a fusor
Replies: 3
Views: 1665

Re: Understanding current draw on a fusor

Hi The way I understand it is the high voltage ionizes the atoms make a plasma. Plasmas conductive formula is k = e^2*Ne*t/u k = conducive e = electron charge Me = electron number density t = mean free path u = electron mass P = 1/k P resistance constant Ohms = p*(l/a) L = length A = area With vacuu...
by Andrew Haynes
Sat Feb 18, 2017 11:58 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: Review article on beam/accelerator driven fusion?
Replies: 25
Views: 12875

Re: Review article on beam/accelerator driven fusion?

@Sven Andersson
The U-238 taper is for shape charge, explosive wave propagation, the styform is the high cross section which turns to plasma, the U238 reflector is Pyrex