Singlettrans
Singlettrans is a term that can refer to a few different concepts, primarily within the context of quantum mechanics and spectroscopy. In the most common usage, it describes a type of electronic transition in a molecule or atom where the spin multiplicity of the initial and final states remains the same, specifically from a singlet state to another singlet state. Singlet states are characterized by having a total electron spin of zero, meaning all electron spins are paired.
This type of transition is generally allowed by the selection rules of quantum mechanics, meaning it has
The term can also be used in other contexts, though less frequently. For instance, in certain theoretical