People have looked into this using fission. There are many possible ways to emit a given fission fragment (different nuclei, reactions, etc). You can look at wh

People have looked into this using fission. There are many possible ways to emit a given fission fragment (different nuclei, reactions, etc). You can look at whether the history of a particular nucleus produced from fission influences its decay. I haven't seen one of these studies that has observed deviation from the expected markovian behavior outside of measurement uncertainty.