In reply to Axil Axil's message of Tue, 23 Apr 2013 21:46:53 -0400: Hi, [snip] >Nickel-59 is a long-lived cosmogenic radionuclide with a half-life of >76,000 years. Seems like a long time to wait.
No, that's a beta decay once it's in the ground state. The transition from the excited state to the ground state, with emission of 9 MeV worth of gamma(s) usually happens within a tiny fraction of a second. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
