Single and double excitation spectra involving the 4d subshell of Ag I

Abstract

Considerable extensions of the 4d-absorption spectrum of Ag I have resulted from improvements in experimental technique. All the allowed transitions to 4d 9 5s 5p have now been accounted for, and the weak n f series converging on the 4d 9 5s limits have been observed. Double excitations involving the 4d subshell have been detected. A detailed analysis is attempted by comparison with ab initio Hartree–Fock calculations.