First, I'd like to provide a short summary of what I'm trying to convey. I believe the key to producing ultra high rate enhancement in plasma based cold fusion and LENR systems is to operate in the zone of Negative Differential Resistance with an optimum fuel mixture. To achieve an even more efficient state of operation, the circuit should be tuned so the discharge can remain in the negative resistance zone and resonant oscillations can travel through the plasma. In this case, the system becomes nearly self sustaining and the input power can be reduced to almost nothing.
Now, I'd like to share some posts I've found online from individuals who were members of Brilliant Light Power's former Yahoo group that was recently removed.
The reason why Mills has taken so long to find a commercially viable design comes down to how electrodynamics of plasma can be designed to support the hydrino reaction. It was only in late 2013 that Mills discovered that a characteristic of arc plasmas called Negative Differential Resistance was an important pre-condition for sustaining the reaction. The hydrino reaction is ionizing, meaning that the HOH catalyst will ordinarily lose its outer electrons. This generates additional current in the plasma. If the plasma has a positive resistance, then increasing the current raises the voltage potential and therefore is unfavorable to the formation of subsequent hydrino reactions. However, if you create a NDR in the plasma (by supplying high current, in the neighborhood of 10k amps), then consider what happens to the voltage as the ionization-generated current is applied. Per Ohm's law, the increased current causes the voltage to drop! Instead of a negative feedback loop, there is now a positive feedback loop supporting the formation of hydrinos. Under an NDR-containing arc plasma, the hydrino reaction becomes explosive. Before 2013/2014, none of Mills' designs could be commercialized because they were inherently rate limiting.
Since 2014, Mills' engineering efforts have been focused on containing and moderating arc plasma-based reactions involving low-voltage, high-current mixed with H2 gas fuel and trace amounts of HOH catalyst.
Here is another.
Please see this recent post. The reaction kinetics are unfavorable (i.e. rate limited) unless there is a Negative Differential Resistance. When you supply high current, you get NDR and the feedback changes from negative to positive. The hydrino reaction can exist without it, but the reaction rate isn't commercially viable.
Here is another.
"So, where has Mills written about this phenomenon you seem to have just made up on the spot?"
This comes from personal communication with Dr. Mills on the now defunct SoCP. The archives have been removed as well so I'm afraid all we have to go on is my memory. My apologies if you find that insufficient.
And from a different user on the same forum.
I remember the same as Optiongeek. Dr. Mills had communicated on several occasions at the SoCP Yahoo Group the theme of negative resistance and its key role in the high reaction kinetics of the Suncell.
Another important detail.
Furthermore, and probably most importantly, the high current pulse serves to flush out the charge buildup (from ionized catalyst) that would otherwise inhibit the reaction kinetics.
So these posts describe very well how the negative resistance of the Suncell maximizes the rate of hydrino formation. I am confident this is the same mechanism at work in the E-Cat SK.
However, Randell Mills currently dismisses any connection between his technology and cold fusion or LENR. However, in his original patents, he gave a theory as to how hydrinos could more easily undergo nuclear reactions with other atoms. I'd like to state that I am NOT convinced that a hydrino is simply a shrunken hydrogen atom. Instead, I think it is likely a process takes place that modifies the hydrogen atom in some way that we don't understand. But regardless how this happens, the modified hydrogen atom is more likely to undergo nuclear reactions with other atoms. I expect that if you then apply appropriate stimulation, nuclear reactions can then take place. It's my guess that this stimulation can be the relatively high frequency ion acoustic oscillations produced by the space charge construct with a double layer on the surface that's constantly absorbing and emitting ions. These oscillations are visible on Andrea Rossi's oscilloscope. This means if you can tune your circuit well enough a portion of the heat produced by the LENR reactions will be absorbed by the plasmoid, converted into electrical current, and fed back into the circuit. When this happens, the device is in a virtual self sustain mode with extremely high COP.
There's probably a lot more about these systems that we don't understand. However, I think the basic concept is simple, and this is a direct path towards high powered LENR systems. Although electrolytic and powder based systems will all have their niches, I think that these plasma based devices are superior. They offer the ability to be turned on and off, to produce extremely high power density, to be extremely portable, to reach extremely high temperatures, etc.
I would like for a serious discussion of the negative resistance regime to begin in this thread.