Two or three people have suggested to me that Mizuno's reaction must be unstable because it is exponential and self-heating. I do not think so.
I commented on this at LENR-forum. Let me copy a few paragraphs. First, you can see this is anomalous heat. Look at the first 10 minutes of Fig. 6, and the stray points in Fig. 8. Resistance heating does not act that way. Now look at the increase in Fig. 6 from minute 10 to hour 1:40. It is sedate. When resistance heating is turned up, the reactor heats about as quickly as a toaster oven. It takes a while for that increase to reach the flow calorimetry, but it does not take an hour and 30 minutes. This gradual increase is from anomalous heat. The anomalous heat increases exponentially in response to temperature, but "exponential" does not mean rapid, or out of control, or unstable. It just means the heat goes to a proportionally higher level in response to higher temperatures. The reaction must be self-heating to some extent. 50 W of resistance heating alone would never begin to reach these temperatures. In Fig. 6, around 1:40 the heat leaving the reactor balances the heat being produced in the reactor, so the reaction stops going to higher levels. It stabilizes. Again, self-heating does not mean going out of control. Burning wood must self heat or the reaction stops, but that does not mean a wood fire goes out of control, or that it never reaches a terminal temperature and a stable, terminal heat production level. . . . Apart from this, I have a feeling the heater is boosting the reaction for some reason other than just higher temperatures, such as IR stimulation. I will let others with more knowledge of physics speculate about that. Anyway, I do not think an exponential self-heating reaction necessarily means the reactor might go out of control.
