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Dunham coefficients for the X1 Sigma g+ state of Mg2

Dunham coefficients for the X1Σg+ state of Mg2

Dunham
coefficient
Approximate
description
Value
(cm-1)
Standard
deviation*
Y10ωe0.51121×102   0.414×10-1
Y20exe-0.16448×10    0.110×10-1
Y30ωeye0.16244×10-1  0.115×10-2
Y40ωeze-0.61060×10-3  0.412×10-4
Y01Be0.92866×10-1  0.107×10-3
Y11e-0.37758×10-2  0.488×10-4
Y21ϒe0.10679×10-3  0.704×10-5
Y31δe-0.96831×10-5  0.309×10-6
Y02-De-0.12166×10-5  0.663×10-7
Y12e0.30768×10-7  0.180×10-7
Y22 -0.21344×10-7  0.118×10-8
Y03He-0.26238×10-100.155×10-10
Y13 -0.85415×10-110.196×10-11
Y04Le-0.17914×10-140.119×10-14

*Standard deviation on fit to term values = 0.061 cm-1; dissociation energy, De = 424 cm-1 = 0.0526 eV; equilibrium internuclear distance, re = 3.890 Å

Created November 2, 2015, Updated August 25, 2016