Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… ·...
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Transcript of Ions%in%np %Configuraons%eldora.as.arizona.edu/~yshirley/Arizona/AST300B/AST300B_HIIProbe… ·...
Ions in np2 and np4 Configura1ons
Table of Collision Strengths with e-‐
T sensi1ve Line Ra1os
From Osterbrock & Ferland – AGN2
Low n limit: n = 1 cm-‐3
Ions in np3 Configura1ons
n sensi1ve Line Ra1os of np3 Line
Ra1
o
n sensi1ve Line Ra1os of Fine Structure Lines Line
Ra1
o
HII Region Line Cooling Rates Co
oling rate
Total cooling
rate
Orio
n Tk