Is LPPX trying decaborane right now?

[Aeronaut]

vansig wrote: does it yet stand to be disproved?

parameters: gas, anode diameter, length, fill pressure, in FoFu-1 differ from that of the paper;
i expect lee’s calculator to quantify a prediction for them, though.

We’d have to get FoFu’s actual or design values for C0 and L0. With those entered, and a new fuel type specified, the Lee Simulator should then be able to fit the current traces observed in D-D to the machine, and from that platform, on to pB-11 fuel. Sounds easy enough, lol.

Assuming we encounter the current limit, this would give us a structured numeric environment that can be tweaked and experimentally examined in the same day.

[MTd2]

I spent a few hours (each simulation takes about 1 minute) playing with Lee`s model using values around those actually used in FoFu 1. There was a problem updating it to higher voltages, which it was that the capacitors had to have less capacity in order to keep the system under with 100KJ. The firings went below 1MA.

The best value I could get playing with values was about 0.2J going up to 100KV and trying to keep a total of 100KJ. It is clear that following Lee`s model makes it impossible to achieve more than 1% of the target value.

But there is a chance that FoFu – 1 does not follow. The reason is simple. FoFu is not a closed circuit, it is actually a superposition of 12 Lee`s models working at 10KJ and 45KV between cathode and anode, all of them firing simultaneously.So, using a sqr(12) smaller radius, and then multiplying the plasma current obtained, I easily get 7MA most of the times. This is likely an error, and probably there should be a sqr(12) smaller value, so that the value at the pinch is around 2.5-3 MA.

[Lerner]

I doubt you are using Lee’s latest model. We are using it to model our results pretty well, except that Lee’s fusion yield model, like our own, predicts higher yields than we have obtained. If you have been following our posts, we think we know why this is the case and hope to prove this soon with new experiments. We can get Lee’s model to predict deuterium fusion yields well into the 100’s of J. However, you have to cautious as the model has been desinged only for fill pressures below 10 torr and we are going well beyond that. Also, of course there are no predictions for pB11 with Lee’s model.

[MTd2]

I downloaded the latest version here:

http://www.plasmafocus.net/IPFS/modelpackage/UPF.htm

I downloaded yesterday and with this version that I fired shots. I always let fill pressures for deuterium around 15Torr. I tried dozens of values, and never got anything above 0.2J. Would you mind giving your parameters?

I think you are actually talking about the scaling of current vs. yield, which what was actually talked about in news posts, but it is something inferred from his model and experiments. I am sure these are correct values given that they ultimately talk about compression waves.

[Author]

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