Iwamura results with pressure loading only: interesting qualitatively but they don't achieve a sufficient reaction rate for detectable excess heat. You need a high D/Pd loading ratio (~1) for that, or so I understand, and they don't have it. Their ICCF12 paper indicates in Fig.11 a D density nD of 2*10^22 per cm3 for their best Pd complex. One cm3 of Pd is 12g --density 12.0--, which is 12/106.4=0.11 mole --molar mass 106.4g--, which is 0.11*6*10^23 atoms i.e. a Pd density of 6.6*10^22 atoms per cm3, so this would be a D/Pd of only 2/6.6=0.3 if I am not mistaken, far from unity.
Double layer modelling at the atomic level, I meant "does the geometry I used in my 3D model sound plausible to you"? Does the Bockris book describe the detailed geometry of the Pd atoms/ excess electron layer / water molecules / electrolyte protons assembly? I'll post a more elaborated description of my semi-educated guess for that geometry in the relevant thread, where your comments will be welcome. Face Centered Cubic metals dimensions: nice compilation! I used almost the same figures as the standard ones you have listed for Pd, only a bit larger to allow for the slight expansion due to the loading (I used 0.4 nm for the unit cube side, yielding 0.283nm pitch between Pd atoms along the cube face's diagonals --your figure for the bond length is 2.75 A = 0.275 nm, not significantly different-- ). Michel ----- Original Message ----- From: "Horace Heffner" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, August 28, 2007 5:09 AM Subject: Re: [Vo]:Re: Deflation Fusion - Thermal Cycling and High Temperature Alloys On Aug 27, 2007, at 4:04 PM, Michel Jullian wrote: > Hi Horace, lots of sensible contributions as usual, I wonder how > many of you there are ? ;-) Let's call a truce in our ongoing > controversy for a while. Sounds good to me. It is mostly only relevant to Figure 1 and associated text of my little paper anyway. > > You mention high pressure or high voltage hydrogen loading, do you > think you can compete with the ~10^26 atmospheres loading achieved > by electrolysis? :-) I don't think that it is necessary to compete with electrolysis loading. Consider the fact Iwamura used pressure loading only: Iwamural et al, “OBSERVATION OF LOW ENERGY NUCLEAR REACTIONS INDUCED BY D2 GAS PERMEATION THROUGH PD COMPLEXES”,The Ninth International Conference on Cold Fusion, 2002. Beijing, China: Tsinghua University, http://lenr-canr.org/acrobat/IwamuraYobservatioa.pdf Iwamural et al, “OBSERVATION OF LOW ENERGY NUCLEAR REACTIONS INDUCED BY D2 GAS PERMEATION THROUGH PD COMPLEXES”,The Eleventh International Conference on Condensed Matter Nuclear Science, 2004. Marseille, Francehttp://lenr-canr.org/acrobat/IwamuraYobservatiob.pdf and Dufour (stunningly!) used only the tiny amount of hydrogen already in the Uranium matrix: Dufour, J., et al.,”EXPERIMENTAL OBSERVATION OF NUCLEAR REACTIONS IN PALLADIUM AND URANIUM — POSSIBLE EXPLANATION BY HYDREX MODE”, Dec 2001, http://lenr-canr.org/acrobat/DufourJexperiment.pdf I don't take the Dufour results as necessarily credible without replication, but I certainly can't discredit them either. > > Speaking of which, your comments on my piccies would be welcome, is > the metal-electrolyte interface plausibly modelled at the atomic > level do you think? Yes. It has been described in great detail by Bockris and Reddy, *Modern Electrochemistry*, Plenum/Rosetta edition, 1973, ISBN 0-306-25001-2, a two volume paperback set, which includes the tunneling equations. > I may have not looked hard enough but I couldn't find any realistic > view of the double layer in Google Images, people tend to > schematize the hydrated ions as separate entities all right, but > the metal surface is always shown as an idealized flat plate > whereas in fact its atoms are not smaller than the water molecules > (they are of exactly equal size in the case of Palladium > incidentally, which may be significant) I don't know if you are aware of it, but I provided at least approximate geometry figures for various FCC metals at: http://www.mtaonline.net/~hheffner/CCP.pdf Horace Heffner http://www.mtaonline.net/~hheffner/
