From: Jed Rothwell
* Arata made a similar breakthrough with palladium nanopowder long before Rossi. For the record, Arata concluded that his alloy of mostly nickel and palladium was 10 times more active than palladium alone, in nanopowder form. This alloy only works on a support of zirconia, and this is using deuterium gas. His results with hydrogen were not as good. Ahern tested different alloys with hydrogen - and gradually reduced the Pd content until the excess heat results reversed - and found the best Arata-style alloy is about 85% nickel, 15% palladium in a zirconia support. That is the best for hydrogen, not necessarily deuterium. Takahashi has tested a large assortment of nanopowders, including the ones Arata specified, and at the recent ACS stated that the Ahern sample was the most active sample he has tested. Jones
