Back to PES Main Page Back to Strontium Page NIST Physical Measurement Laboratory
[skip navigation] National Institute of Standards and Technology NIST Physical Measurement Laboratory

Electronic potential energy curves of the Sr2 Excited Σ and Π states

Figure 1

Figure 1. Potential-energy curves for the 3Σ± and 5Σ- states. Full lines: 3Σg+; dashed lines: 3Σu+; dotted line: 3Σu-; ·-·-·- : 5Σ3-.


Figure 2

Figure 2. Potential-energy curves for the 1Σ+ states. Full lines: g-sym.; dashed lines: u-sym.


Figure 3

Figure 3. Potential-energy curves for the 1Π states. Full lines: 1Πg; dashed lines: 1Πu.


Figure 4

Figure 4. Potential-energy curves for the 1,3Δ states. Full line: 1Δg; dotted line: 1Δu; dashed line: 3Δg; ·-·-·- : 3Δu.


Figure 5

Figure 5. Potential-energy curves for the 3Π states. Full lines: g-sym.; dashed lines: u-sym.

Figure 6

Figure 6. Comparison between the potential-energy curves of the X 2Σu+ state of Sr2+ and of some excited states of Sr2. Full line: X 2Σu+; dashed lines: 3Σu+; dotted lines: 1,3Δu; ·-·-·- : (2)1Σu+.

Reference
Figure 7

Figure 7. Potential curves for the excited triplet and singlet states of the Sr2 dimer correlating with the 3P + 1S and 1P + 1S asymptotes (1 cm-1 = 4.556336 × 10-6 Eh).


Figure 8
Figure 8. Potential curves for the excited states of the Sr2 dimer correlating with the 3D + 1S and 1D + 1S asymptotes. Potential curves arrising from the 3P + 1S and 1P + 1S asymptotes are marked with dashed lines (1 cm-1 = 4.556336 × 10-6 Eh).



Table 1. Spectroscopic parameters De (cm-1) and Re (a0) for the excited states Sr2.
Singlet state    De    Re        Triplet state    De    Re
(4d) 1Δg 5 736 6.25 (5p) 3Σg 362 11.50
(4d) 1Σg 4 550 7.90 (4d) 3Δg 2 790 8.52
(5p) 1Σg 1 107 6.76 (4d) 3Σg 1 353 8.51
(4d) 1Πu 5 410 7.51 (5p) 3Πu 1 892 8.02
(5p) 1Πu 4 068 6.75 (4d) 3Πu 4 805 7.50
(4d) 1Σu 5 440 7.12 (5p) 3Σu 6 895 7.74
(4d) 1Δu 9 263 7.50 (4d) 3Δu 6 037 7.24
(5p) 1Σu 5 490 7.74 (4d) 3Σu 4 698 7.25
(4d) 1Σg 14 590 6.88 (5p) 3Σg 8 936 6.98
(5p) 1Πg 5 483 7.51 (4d) 3Πg 5 016 7.49

Back to PES Main Page Back to Strontium Page