Interaction potentials of Cd–Ne from temperature dependent of intercombination Cd line [formula omitted

Abstract

The absorption profile and the temperature dependence of the Cd line at 326.1 nm perturbed by Ne at a density of about 1.13×10 19 atoms cm −3 have been carefully studied over a spectral range extending from 600 cm −1 in the blue wing to 700 cm −1 in the red wing using a high-resolution double-beam spectrometer. Interatomic potentials for Cd–Ne in the ground electronic state 10 + as well as the exited ( 30 + and 31 ) states have been deduced from the spectrum. The van der Waals coefficient differences between the ground 10 + state and the two exited states 30 + and 31 (ΔC 6 0 and ΔC 6 1) are obtained from the near red wing profile using Kuhn's law. The values of ΔC 6 0 and ΔC 6 1 are found to be equal to 23.5±2 and 39.3±3 eV A ̊ 6 , respectively. The interatomic potentials parameters (well depths ε (cm −1) and their positions R m (Å) for the ground 10 + and the exited ( 30 + and 31 ) states are found to be ( 41.4±3, 4.1±0.2 ), ( 82.5±4, 3.7±0.2 ) and ( 18.03±2, 4.25±0.3 ), respectively. The obtained well depths with their allowable errors are in good agreement with the values obtained before for the Cd–Ne system from the molecular beams experiments.