One of the differences between the HotCat and Rossi's original eCat was that the original devices were loaded with H2 and THEN heated. This allowed the H2 to be present while the eCat was heating to the reaction operating point (>300C). Apparently in this transition from cold to ~300C, there is a temperature at which the reaction begins in some "starved" mode where the gamma output is either greater amplitude or higher energy (allowing it to pass through the shielding) than when the operating temperature is reached. Once some kind of "saturated" condition is reached at the desired operating temperature, either the gamma amplitude subsides, or the gamma photon energy declines and it is substantially absorbed (thermalized) in the apparatus.
In Rossi's HotCat, the H2 is supplied by a metal hydride, possibly MgH2. This hydride releases its H2 sharply upon reaching a critical temperature of about ~300C. This may allow the transition temperature range to be crossed without substantial H2 being present; thus avoiding the transition emissions. How the H2/hydride behaves in cool-down, I am not certain. In shutdown cooling, I am not sure that the H2 will be re-absorbed as sharply or at the same temperature. Absorbtion and de-absorbtion will also depend on the exact metal hydride used, its powder size, and whether or not something like a lithium borohydrate catalyst is used. This may mean that emissions are avoided in startup and operation, but not in shutdown. On Thu, Jul 18, 2013 at 1:32 PM, Jones Beene <[email protected]> wrote: > It is not me that it "insisting". The data indicates no gamma radiation. > Very thorough radiation testing of the HotCat concluded that no gamma > radiation exists in that version. > > There may have been minor gamma radiation in the earlier ECat but it was > orders of magnitude too little to account for the thermal gain. > > > -----Original Message----- > From: David ledin > > Why you insist that e-cat don't emit gamma ray while both rossi and > focardi claimed otherwise. > >
