I should add that the precise atomic ratio of 77/23 in the alloy known as "Type A" which was discovered in 1930, is not arbitrary and is a critical parameter. Brian Ahern and Keith Johnson discovered the superconductive aspect (Tc) was maximized in an alloy at this precise ratio in a sharp peak, as is proton conductivity. If a different ratio is used, success is problematic, since proton conductivity comes first. For instance a 50/50 alloy would possibly fail to load hydrogen at all.
Since Pd as a pure metal is denser than Ag by a ratio of 120/105 the optimum alloy ratio, if stated by mass, is different than the atomic ratio - and alloys are often designated by mass - so you can see the problem with proper labeling. From: Jones Beene Thanks Robert. I should have spent more time on the explanation of that table, but the post was already getting too long. The "JM Pd" is type A which is 23% Ag. This was apparently successful 17 times out of 28 including the hero effort which was 7 times more P-out than any boron run. The unsuccessful "NRL silver alloy" is a mystery and it does go against the contention that silver is the critical component, but they did say that deuterium loading was poor for the NRL sample, hence excess-heat production was not likely. Why loading was poor is not stated. When silver vapor is used - as in Mills Sun Cell experiment, loading becomes a non-issue and surface area is maximized. From: Robert Dorr Looking at Table 10 in the document cited, it would appear that Boron is the smoking gun, not silver. In fact Pd-Ag never worked but Pd-B worked 7 out of 8 times. Robert Dorr
