Although not an ion gun per say...plasma gun.

For the design and construction details of ion guns, necessary for more advanced designs and lower vacuums.
3l
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Re: Although not an ion gun per say...plasma gun.

Post by 3l » Sun May 30, 2004 11:18 pm

Hi Mark:

really a plasma.
It lasts due to the leidenfrost effect.

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Larry Leins
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Adam Szendrey
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Re: Although not an ion gun per say...plasma gun.

Post by Adam Szendrey » Mon May 31, 2004 9:40 am

This thing could be scaled up. A MOT (or more MOTs in paralel) can provide a massive arc to be fired. With a 30-40 kV, 5-10 uF cap bank this could be a really neat burgler annihilator .
Or attach it to the roof of your car. Mad Max frenzy.
Anyway, i think i'll try this one day. For some reason, building destructive things has it's beauty.
Like a nuclear bomb...you can hardly ever see such a beautiful , and magnificent explosion. You can feel the power.
Yet, it is capable of killing millions of human lifes.

Adam

Q
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Re: Although not an ion gun per say...plasma gun.

Post by Q » Mon May 31, 2004 11:31 am

i have to agree. it's like a tesla coil, you build it, and it makes really nice sparks... but what do you do with it?
then people ask why you built it... "because i wanted to"
there is just something about a powerful discharge.

this one is a project that i have almost finished.

Q

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Mark Rowley
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Re: Although not an ion gun per say...plasma gun.

Post by Mark Rowley » Mon May 31, 2004 6:49 pm

Q, try to post some pics when you get it done.

Mark Rowley

3l
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Re: Although not an ion gun per say...plasma gun.

Post by 3l » Tue Jun 01, 2004 12:31 am

Hi Guys:

I forgot to mention that to get really long lasting arcs you need an ionoizing agent like aquaous lithium chloride or Bromide.
Use strontium chloride for bright red.
Barium chloride for bright green.
I used 10 grams in a 2 cup measuring cup of deionized water.
I used a lantern wick to feed it in ...it is self regulating...it burns away.

Happy Fusoring!
Larry Leins
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Re: Although not an ion gun per say...plasma gun.

Post by apollo » Tue Jun 01, 2004 1:05 am

How long do these things last? How far do they go?
How often do you need to replace the carbon rods?
Where do you put the ionizing agent?
So really all this device does is put an arc from a capacitor in between the two carbon rods? It doesn't pre-ionize the air first?

3l
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Re: Although not an ion gun per say...plasma gun.

Post by 3l » Tue Jun 01, 2004 1:28 am

Hi Liam:

The wick goes into the center of the arc.
A 6 " wick will last a month of continous firings.
A Coalman Lantern wick will do.
The idea is to get a hot broad spark between the electrodes.
I can usually pull the rods 3 " apart while making an arc.
In 3 years of running the carbons never needed replacement.

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Larry Leins
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Mark Rowley
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Re: Although not an ion gun per say...plasma gun.

Post by Mark Rowley » Tue Jun 01, 2004 3:04 am

Larry,
So this Strontium or Bromide acts as a medium for the plasma to operate in ? This sounds quite similar to microwave oven plasma. In the microwave, the plasma uses a medium of carbon(ie. smoke) to operate in. Is this a correct assumption ?

From reading your post it seems that this will not work without these mediums.

Mark Rowley

3l
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Re: Although not an ion gun per say...plasma gun.

Post by 3l » Tue Jun 01, 2004 4:23 am

Hi Mark:

It won't last more than four feet without the ionizing agents.
These agents when ionised perpetuate the plasma for a few seconds more so you can get more height.
The longest fireball time is 3 seconds at 100 joules.
They never hit the ground unless they hit something to reflect them like a power line!

Carefull Yall these things take no prisoners if they happen to hit dry leaves or a stack of newspapers or trash pile.

Happy Fusoring!
Larry Leins
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shojidoug
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Re: Although not an ion gun per say...plasma gun.

Post by shojidoug » Tue Jun 01, 2004 11:41 pm

Do you think you could magnetically or elctrostaiclly capture one of these plasma balls?
Then mabey "feed it" to keep it up and running? Just a fun thought

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