posted on May, 29 2019 @ 10:35 AM
This process is a similar way in which Ultra Pure Argon produces scintillation light. In Argon when it is Ionized it can form molecules in an excited
state, called exomers or excited dimers. These end up in either a singlet or triplet state. When these states decay, giving you back the two argon
atoms, they produce UV light. It has a distribution peaked around 128nm.
The two states also have different lifetimes, one very short lived (order of a few ns) the other longer lived (order of a few microseconds)