Created attachment 470 [details] macro for rdecay01 Attached macro is the decay F18-->O18 I try to use the command /grdm/decayBiasProfile to force the decay time within the first hour. file measures.data is simply 0. 1 3600. 0 As you will see, e+ and neutrino are generated, but ion O18 is missing.
The stable nucleus at the end of the decay chain is now added to the particle stack during the biased mode. Since this mode decays all unstable nuclei, they are not added to the stack.