title: Evidence of a weak dipole transition moment between the X(1)0g+ and (3)1u(5(3)P1) electronic energy states in Cd2.
abstract: Theoretical and experimental evidence of a weak M(z)(R) dipole transition moment between the X(1)0g+ ground and (3)1u(5(3)P1) excited states in Cd2 is presented. Two independent attempts at recording an excitation spectrum of the (3)1u <-- X(1)0g+ transition using a laser beam crossed with a supersonic free-jet expansion beam are reported. The measurements were performed in a spectral range predicted as a result of both ab initio calculations of the electronic energy-state potentials involved in the transition and a simulation of the excitation spectrum. Unfortunately it was impossible to provide unambiguous experimental support for the calculated (3)1u-state potential, due to the very poor signal to noise ratio. However, the experimental results corroborate the very small values of the <(3)1u|M(z)|X(1)0g+> elements obtained in the calculations. This work provides as a reliable starting point for further analysis of the (3)1u-state characteristics.
authors.affiliation: Instytut Fizyki, Uniwersytet Jagielloński, ul. Reymonta 4, 30-059 Kraków, Poland. lukomski@if.uj.edu.pl
authors.forename: M
authors.initials: M
authors.lastname: Łukomski
authors.forename: M
authors.initials: M
authors.lastname: Ruszczak
authors.forename: E
authors.initials: E
authors.lastname: Czuchaj
authors.forename: J
authors.initials: J
authors.lastname: Koperski
mesh_terms: D002104:Cadmium / Q000737:chemistry*; D019281:Dimerization; D004581:Electronics; D004583:Electrons; D007834:Lasers; D008968:Molecular Conformation; D013053:Spectrophotometry / Q000379:methods*
chemical_list: D002104:Cadmium