We have to agree with the comments that the prior testing clearly indicates that there is no significant radioactivity detected during operation of E-Cat.
One unanswered question relates to startup. Not just startup, but a possible method "after startup" of attenuation of the decay rate to levels that can lower the reading by a large factor on the type of positron detector used in the testing. This has not been addressed adequately before: the way in which a significant reading can be made to look similar to background. But it can be done, has been done, and can be validated by anyone interested. IOW, there is a known way that natural decay radioactivity is either "masked" or altered - and it relates to high voltage. Ref: The two patents of Wm. Barker. The implication is that the radioactivity of potassium carbonate, enriched in the 40K isotope in particular, can be masked to an extreme level by the application of high voltage. If you have a Tesla coil and a gamma scout, and a supply of potassium carbonate, then you can perform this experiment yourself. U.S. Pat. No. 4,961,880 "Electrostatic Voltage Excitation Process and Apparatus" issued to William Barker in 1990 and a second patent also expired disclose an apparatus for utilizing HV electrostatic charge to accelerate or decelerate the "apparent decay rate" of a few mineral radioisotopes. This patent has been replicated independently but not published in a peer reviewed journal, AFAIK. Electrostatic fields are generally not sufficient to influence decay rates in pure elements, and there is no dispute over that. But RF at HV from a Tesla-type device has been shown to be surprisingly effective to change the apparent decay rate (increase or decrease) in *some minerals* by a factor of up to 10^6. It is not clear why some minerals respond and others do not, or if the change is "real" or being masked somehow, but the presence of oxygen and carbon are indicated. The Barker technique does not work for every mineral, but for unknown reasons the net effect (change in counts) is almost unbelievably accelerated in a few like pitchblende, in particular - and decelerated in others. A particular potassium compound could be in that category. One might be more inclined to consider this possibility if there was an indication that Rossi's so-called "RF generator" was in fact a transformer of the kind used for Tesla coils. Jones
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