Distance, voltage, pressure for deuterium arc?
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Distance, voltage, pressure for deuterium arc?
Say I want to create an arc in D2 between two pointed "needle" electrodes at a pressure of 1 Pa. Is there some rule of thumb or formula that can tell me how high the electric potential need to be to create a breakdown and form an arc?
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Re: Distance, voltage, pressure for deuterium arc?
Yes, Paschen's law: https://en.wikipedia.org/wiki/Paschen%27s_law
Also: https://en.wikipedia.org/wiki/Electric_ ... e_in_gases
Typically 500v to a few kv should be sufficient for most practical gap distances.
Also: https://en.wikipedia.org/wiki/Electric_ ... e_in_gases
Typically 500v to a few kv should be sufficient for most practical gap distances.
Andrew Seltzman
www.rtftechnologies.org
www.rtftechnologies.org
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Re: Distance, voltage, pressure for deuterium arc?
A practical gap distance would be 1 centimeter. Let's say the pressure is 1 Pa or 10 Pa. Then I cannot read on the curve the breakdown voltage. Is hundreds of kV needed to start an arc then? Let's say I use sharply pointed electrodes.Andrew Seltzman wrote:Yes, Paschen's law: https://en.wikipedia.org/wiki/Paschen%27s_law
Also: https://en.wikipedia.org/wiki/Electric_ ... e_in_gases
Typically 500v to a few kv should be sufficient for most practical gap distances.
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Re: Distance, voltage, pressure for deuterium arc?
Sven
I would use the control gear for gas discharge lamps. You have plenty of choice Flourescent light ballasts and starters, mercury discharge lamp control gear multi halide discharge control gear, even car xenon HID discharge control gear.
all of this generates the correct lamp current (wattage) and provides the inductive high voltage kick to strike the arc
I would use the control gear for gas discharge lamps. You have plenty of choice Flourescent light ballasts and starters, mercury discharge lamp control gear multi halide discharge control gear, even car xenon HID discharge control gear.
all of this generates the correct lamp current (wattage) and provides the inductive high voltage kick to strike the arc
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- Posts: 117
- Joined: Mon Dec 02, 2013 4:46 pm
- Real name: Sven Andersson
Re: Distance, voltage, pressure for deuterium arc?
Which type is most suitable for striking and maintaining an arc in deuterium gas at a pressure of 1-10 Pa and a gap distance of 1 centimeter between two pointed electrodes?John Futter wrote:Sven
I would use the control gear for gas discharge lamps. You have plenty of choice Flourescent light ballasts and starters, mercury discharge lamp control gear multi halide discharge control gear, even car xenon HID discharge control gear.
all of this generates the correct lamp current (wattage) and provides the inductive high voltage kick to strike the arc
-
- Posts: 815
- Joined: Sun Feb 01, 2004 8:02 pm
- Real name: Andrew Seltzman
- Contact:
Re: Distance, voltage, pressure for deuterium arc?
Go with a small neon sign transformer and variac, that should give you the widest range of options.
Andrew Seltzman
www.rtftechnologies.org
www.rtftechnologies.org