Well for instance - different isotopes can experience positron emission - for example as described here: "Isotopes on the lower side of the band tend to undergo positron emission." - http://web.fscj.edu/Milczanowski/psc/lect/CH7/isotopes.htm
It is in reference to Chlorine Isotopes I believe...
If a Chlorine Positron - Lithium Positron - and Argon Positron - all left the same unit of infrared energy at once - would the equivalent of a Muon(s) be taken by the interaction?