Calculated spectroscopic constants for the adiabatic S Λ Σ and Ω states of Ba2

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S Λ Σ states	T_e (cm^-1)	ω_e (cm^-1)	R_e (Å)	B_e (cm^-1)	ω_e χ_e (cm^-1)
(1) ¹Σ_g⁺	0	35	4.881	0.0103	0.204
(2) ¹Σ_g⁺ ^(a)	9 763	96	3.624	0.0187	0.710
(2) ¹Σ_g⁺ ^(b)	9 228	99	3.615	0.0188	0.283
(3) ¹Σ_g⁺	11 868	64	3.923	0.0160	0.048
(1) ³Σ_g⁺	9 283	35	4.866	0.0104	0.211
(1) ³Σ_g^-	5 014	93	3.583	0.0191	0.094
(1) ¹Π_g	2 927	84	3.892	0.0162	0.156
(2) ¹Π_g	11 701	60	4.318	0.0132	0.115
(1) ³Π_g	3 090	81	3.893	0.0162	0.200
(2) ³Π_g	9 663	56	4.404	0.0127	0.142
(1) ¹Δ_g	7 507	86	3.554	0.0194	0.330
(1) ¹Σ_u⁺	5 956	70	4.083	0.0147	0.163
(2) ¹Σ_u⁺	13 141	59	4.638	0.0114	0.221
(1) ³Σ_u⁺	4 900	67	4.126	0.0144	0.177
(2) ³Σ_u⁺	9 073	57	4.502	0.0121	0.144
(1) ⁵Σ_u^-	8 741	83	3.680	0.0181	0.067
(1) ¹Π_u	8 846	92	3.573	0.0192	0.483
(2) ¹Π_u	11 091	71	3.829	0.0167	0.081
(1) ³Π_u	7 616	60	3.804	0.0170	0.300
(2) ³Π_u	9 630	59	3.869	0.0164	0.0160
(1) ¹Δ_u	8 841	62	4.176	0.0141	0.209
(1) ³Δ_u	7 576	57	4.184	0.0140	0.244

Ω states	Main Parent	T_e (cm^-1)	ω_e (cm^-1)	R_e (Å)	B_e (cm^-1)	ω_e χ_e (cm^-1)
(1) 0_g⁺	(1) ¹Σ_g⁺	0	36	4.905	0.0102	0.210
(1) 0_g^-	(1) ³Π_g	2 831	80	3.944	0.0158	0.184
(2) 0_g^-	(1) ³Σ_g⁺	9 058	38	4.685	0.0112	0.155
(3) 0_g^-	(2) ³Π_g	9 803	54	4.555	0.0118	0.191
(1) 1_g	(1) ³Π_g	2 744	80	3.908	0.0161	0.192
(2) 1_g	(1) ¹Π_g	3 249	79	3.894	0.0162	0.159
(3) 1_g	(1) ³Σ_g^-	5 114	121	3.690	0.0180	0.450
(1) 2_g	(1) ³Π_g	3 346	80	3.956	0.0157	0.189
(2) 2_g	(1) ¹Δ_g	7 516	92	3.621	0.0187	0.472
(1) 0_u⁺ ^(a)	(1) ¹Σ_u⁺	5 927	68	4.000	0.0153	0.245
(1) 0_u⁺ ^(b)	(1) ¹Σ_u⁺	5 913	77	4.033	0.0151	0.320
(3) 0_u⁺	(2) ³Π_u	9 362	63	3.954	0.0157	0.204
(1) 0_u^-	(1) ³Σ_u⁺	4 893	66	4.185	0.0140	0.186
(1) 1_u	(1) ³Σ_g⁺	4 895	66	4.196	0.0139	0.180
^(a) From the adiabatic curve. ^(b) From the diabatic curve (See text in reference below).