Spectroscopy constants of the Λ–S states of SeBr⁺.

Λ–S states	T e/cm−1	R e/Å	ω e/cm−1	B e/cm−1	ω e χ e/cm−1
X 3Σ−	0	2.1802	378.5	0.0905	1.0977
11Δ	5733	2.1776	381.7	0.0907	1.0549
11Σ+	10 343	2.1890	366.1	0.0897	1.2493
15Π	19 759	2.9854	130.5	0.0482	1.1235
11Σ−	20 145	2.4452	257.8	0.0719	0.8183
13Π	20 402	2.9313	104.4	0.0500	0.8814
13Δ	21 263	2.4542	254.7	0.0714	0.8267