Hi Robin, > A real neutron also leaves too much energy to account for: n + 62Ni => 63Ni + 6.84 MeV
You must not have seen the reference I sent earlier - 63Ni has a beta decay energy which is tiny - only 17.4 keV on average with no gamma. See it near the end of this table (12th from the bottom): http://homepages.cae.wisc.edu/~blanchar/purebeta.htm

