ON THE CONSTRUCTION AND USE OF AB-INITIO QUANTUM-DEFECT FUNCTIONS FORH2O

Ab initio adiabatic and diabatic symmetric stretch/bend potentials of Rydberg states of H2O have been employed for calculations of correspon ding quantum-defect functions. These are in turn employed for the gene ration of the potential-energy surfaces of higher-lying Rydberg states , for the calculation of vibrational levels of the 3p B-1(2) linear st ate and for the calculation of autoionization line widths in the nd(10 0) series. The results are generally in good agreement with existing e xperimental information.