Reply To: NIMBY FUD

[Francisl]

asymmetric_implosion wrote: The quick and dirty of it… Neutron yield (Y) in a pinch device increases with the peak current (I) by a power law with a form Y=a*I^d where d is between 3 and 5. The coefficient a is not a constant (observed from experimental data). So, what parameters affect a? The answer is that the ratio of the pinch voltage to the charge voltage or more commonly measured the ratio of the minimum in the time derivative of the current to the maximum of the time derivative of the current (See graphic labeled Fig 5 for locations of these points). As the dI/dt ratio grows, Y divided by I^d grows leading to more favorable fusion yield (See graphic labeled Fig 7). The larger Z-pinch devices like Z and S-300 don’t fair well by this model while plasma focus devices generally do OK. FoFu-1 and AASC PF-2 do very well. The value of d from general least squares fitting using the 8 machines is 3.79. Want a better fusion source, maximize the ratio of pinch voltage to the charge voltage…well for D-D reaction anyway. D-T might have a maximum due to the low peak in the cross section at 100 keV.

That is some impressive work. I hope it gets published.
Can you use this model to predict the limits of your sampled machines?