Constants of centrifugal distortion of Сu2 molecule

The potential energy curves are calculated for some electron states of Cu₂ molecule by the Rydberg-Klein-Ress method. These potential curves are used to determine the eigenvalues ana eigenfunctions by numerical solution of the radial Schrodinger equation. The centrifugal distortion constants are found from the vibrational wave functions and energies. The obtained centrifugal distortion constants are compared with the values derived by Dunham coefficients.