In reply to Jones Beene's message of Fri, 29 Jun 2012 13:53:06 -0700: Hi, [snip] >Curiously this is precisely in the >spectrum that Bianchini/Levi was looking at, in Rossi's original >demonstration (the positron spectrum). Why were they looking there?
Because 98% of the time, the Copper isotope Cu59 decays via positron decay with a half life of 81.5 seconds. Cu59 is what you get when you add a proton to Ni58, which is the principle constituent of Ni. Hence the transmutation that Rossi claimed was happening should have produced copious positrons, which in turn would have annihilated ambient electrons resulting in pairs of 511 keV gammas, which is what they were looking for. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
