On Fri, Mar 21, 2014 at 7:54 AM, Teslaalset <robbiehobbiesh...@gmail.com>wrote:
> 1. The ß+ decay energy of Cu(x) > Ni(x) + e+ + ve (2 -4 MeV) of each > decay step in the chain, causing the Ni/Cu powder to heat up. > > I think the electron-positron annihilation photons from the radioactive decay of certain isotopes of nickel would escape the system. Since the mean free path of these photons is long, they would be unlikely to thermalize, unless some sort of 100 percent efficiency gamma thermalization mechanism is at play. (Only handfuls of gammas are typically seen.) Eric
