Experimental and theoretical study on the electronic states and spectra of InBr

Abstract

The dispersed laser induced fluorescence (LIF) spectra of InBr molecule are studied, the bands of the A³Π_0⁺–X¹Σ⁺, B³Π₁–X¹Σ⁺ and C¹Π–X¹Σ⁺ systems are observed and analyzed, and the spectroscopic constants of the C¹Π state are obtained. The results indicates there are some new bound electronic states lying at about 37 705 cm⁻¹. Theoretical calculations have also been performed on the electronic states of InBr by using coupled-cluster single- and double-linear response theory (CCSD-LRT). The theoretical results agree with our experimental analyses very well.