Very interesting Jones. This paper has some intriguing facts about lanthum and hydrogen aborption and release in lanthum.
http://pubs.acs.org/doi/abs/10.1021/j100476a006 On Fri, Jul 19, 2013 at 9:17 AM, Jones Beene <[email protected]> wrote: > Bob,**** > > ** ** > > Magnesium hydride does store more hydrogen than most metals and alloys - > by weight, since magnesium is very low density - but the Space program in > Europe and NASA use lanthanum nickel (LaNi5) for hydrogen storage. Rossi > would have access to this alloy through U-Bologna. Low weight is not needed > by the HotCat so my suspicion is that he uses a high-nickel alloy of some > kind instead of magnesium. Lanthanum has magnetic properties that would > favor its use in an active alloy.**** > > ** ** > > But Bob’s observation that a starved mode startup is avoided by having the > hydrogen stored as a metal hydride - is relevant no matter what the storage > alloy.**** > > ** ** > > Nevertheless, the most logical conclusion for the lack of gammas in the > HotCat is that the main energetic reaction produces none (or few). **** > > ** ** > > This would seem to eliminate “fusion” in favor of a reaction where the > energy is derived in a reaction that does not produce high energy photons > OR alphas OR betas, since the ceramic of the HotCat is completely > transparent to low level radiation and even bremsstrahlung would have been > noticed. **** > > ** ** > > *From:* Bob Higgins **** > > ** ** > > 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.**** > > ** ** > > Jones Beene wrote:**** > > ** ** > > It is not me that is "insisting" on anything. The data indicates no gammas > . > > 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.**** > >
