Electron transition notation should be simple

[elegysix]

Alright, so I am trying to make sense of this notation:
From one source I have the transition rates notated such as
Transition:
2-1, 3-1, 3-2, etc
and the source to which I want to compare uses the notation
Transition:
³P₀-³P₁,
³P₀-³P₂,
³P₀-¹D₂, etc.

How are these related? How can I tell what corresponds to n=1,2,3 etc?

Any help is greatly appreciated

 

[vanhees71]

Could you quote your source? The 2nd kind of notation is pretty clear, because it uses the usual notation for the states ("orbitals") common in atomic physics.

http://en.wikipedia.org/wiki/Term_symbol

 

[elegysix]

I think I have figured it out. Please correct me if this is not the case.
If I look at NIST's level data for the ion of interest (Br IV), I can see that ³P₀ is the ground state (n=1), right? And then ³P₁ should be n=2.
Therefore the 2-1 transition would correspond to ³P₁- ³P₀, correct?