High-Resolution Fourier Transform Emission Spectroscopy of the A6Σ+-X6Σ+ System of CrD

摘要: Abstract The CrD molecule has been investigated at high resolution in the 700nm-1 μm spectral region using a Fourier transform spectrometer. molecules were formed chromium hollow cathode lamp operated with neon gas and trace of deuterium. Compared previous work on this present spectra provide greatly improved measurements line positions allow analysis several new bands. rotational 0-1, 0-0, 1-0, 1-2 bands performed providing following principal molecular constants for ground X6Σ+ state: ωe = 1183.1958(21) cm−1, ωexe 15.6006(9) B e 3.175443(21) cm −1 , r 1.654730(5) A . excited A6Σ+ state, T00 11559.7206(6) ΔG( 1 2 ) 1066.4202(10) Be 2.762705(13) re 1.774034(4) A, is involved perturbations. observed perturbations ν 0 vibrational levels are similar to those previously level state CrH. these arise from interactions nearby a4Σ+ preliminary constants: 11 176 3.19 cm−1. This located below lowest molecule, supporting conclusions our