Hello! So I have an issue with determining the probability of a daughter isotope's nucleus being on a certain level after decay from an unstable parent isotope's nucleus on another level. For example: I have a Co-60 nucleus and it decays to a Ni-60 nucleus by B- emission. If the parent Co-60 nucleus was excited at X keV and the daughter nucleus is excited at Y keV, how do I figure out the probability of this transition occurring. Or perhaps where do I find this data? Thanks!