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Physical Measurement Laboratory

Spectroscopic constants of the Mg2 potential curves

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Spectroscopic constants De(cm-1), Re(bohr) and ωe(cm-1) of the Mg2 potential curves arising from the 1S + 1S, 1P + 1S, and 3P + 1S asymptotes

StateDeReωe
X 1Σg+404
(424 ± 5)a		7.50
(7.35)a		45.4
(51.12)a
1Σu+10480
(9387)a		5.85
(5.82)a		191.5
(190.6)a
1Πu 84605.35252.0
(2) 1Σg+61106.00162.4
1Πg 186005.15286.9
3Σg+6711.7515.3
3Πu 2608.0034.4
3Σu+80905.65228.1
3Πg 85725.25259.3
aReference
Atomic / molecular / quantum and Reference data
Created November 2, 2015, Updated August 18, 2025
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