thanks
On Tue, Apr 23, 2013 at 10:03 PM, <[email protected]> wrote: > 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 > >
