Re: Home fusion project

I will have to use a Hartley oscillator circuit.

I will have to wind a new coil, possibly on a cardboard former or a bit of
plastic pipe from the DIY shop. That would be best.

Then I can use a 15-15 turn coil with 80 volts per turn and a 100pF
capacitor. This has an inductance of 20 uH a frequency of about 3.5 MHz a
high Q (my calculations say 27000) a dynamic impedance of 12 M Ohm and a
peak to peak current of 0.2 mA (RF current) and a current of 5.4 amps in the
tank circuit and thus a current sheet of 162 amps and thus a plasma current
of 162 amps with a quiescent anode current of 50mA. I make that 4.8 watt to
maintain the tank oscillations.

The presence of a conducting gas inside the coil will load it and the RF
current will increase as the dynamic impedance will decrease as a result of
the resistive load of the gas this will increase the current in the anode.
This is in parallel with the resistance of the coil and therefore shunts the
tuned circuit thus putting a load on it.

I have been told that the valve will deliver about 75 watts in the manner I
use it and this is available to heat and compress the hydrogen. The specific
heat and mass of the hydrogen present in the tube means that the temperature
rise is mass x specific heat x K rise=time x 75 watt. So degrees/second=75/
(mass H x specific heat H) but since not all the hydrogen in the tube is
heated (It is only the tube that forms down the axis that is heated and
compressed not all the hydrogen in the tube) so the mass is very small. This
means that the rate of heating is high.

Mass of hydrogen in tube is 3.47E-10 Kg that is 1.73 E-7 Mole so it will
have a heat capacity of 5E-6 J/K

So the rate of heating will be 75/5E-6 degrees/second and will reach 15
million degrees in one second, 200 million in 13.3 seconds

The pressure will also be very high, 1 Newton over the area for 100 amps so
2.6 N for 162 amps when near the axis the area is small. At a radius of
0.0001 M the area is 9.42E-11 so the pressure will be 2.7E10 Pa. The current
density comes to 1E16 amps/meter squared.

These temperatures and pressures are high enough for fusion at a useful
rates.


--
Chris
http://www.myphilosophy.eu
"Chris" <anonymous@xxxxxxxxxxxx> wrote in message
news:%7Tuj.128909$3m6.96477@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Having failed to even ionise low pressure hydrogen using an induction coil
with an interruptor I'm building an RF oscillator out of the same
components. It is going to have a small transmitting mullard valve (used
but tested working) as the active element, a 11 turn coil, a split
capacitor of 5nF and a 2400 volt rail with a current of 50mA in the anode
circuit.

I'm using a grid bias of -690 volts with a 10meg pot to adjust the bias to
alter the current.

The resonant frequency should be about 1MHz, the Q about 2000.

The current in the tank circuit will be about 100 amps and so a current
sheet of 1000 ampere-turns facing the hydrogen tube and with 200 volts
around the hydrogen tube, this should be enough to ionise it and so a
current of 1000 amps will flow in the hydrogen plasma.

This will put an inward force on the ionised gas thus making a stable line
of ionisation down the axis of the coil in the hydrogen gas.

Very close to the axis the pressure on the ions rises to hundreds of
atmospheres and the ion temperature rises to millions of degress K.

We should then initiate fusion here and the coupling of the ions by
induction will put emf in the coil and thus maintain oscillations when the
exciter is turned off.

And we will be able to draw power.

I think I need a regulator to prevent runaway fusion to happen, a shunt
regulator must be used but a valve will not do. I can only think of a
saturable reactor for this, but I don't have one.

If it gets too hot I take out the hydrogen tube.

That is the theory.

Any comments from the professionals?
--
Chris
http://www.myphilosophy.eu



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