English: An exciplex (a form of excimer-short for excited dimer), is used to describe an excited, transient, combined state, of two different atomic species (like XeCl) that dissociate back into the constituent atoms rather than reversion to some ground state after photon emission. Excimers are often diatomic and are formed between two atoms or molecules that would not bond if both were in the ground state. The lifetime of an excimer is very short (nanoseconds). Binding of a larger number of excited atoms form Rydberg matter clusters the lifetime of which can exceed many seconds. For NFT LCUs illustrated here instead of the photon a noeon of the unified field is the quanta gated in Spacetime exciplex.