The XUV spectra of free metal atoms obtained by absorption, photoion, photoelectron and
two-photon spectroscopy are reviewed. The experimental results are discussed in …

Publisher Summary Over the past decade, there has been considerable progress on high-
precision calculations for the lithium atom. This chapter summarizes some of the progress …

Thirteen core-excited lithium doublet states of the 2 P, 2 P o, 2 D, and 2 D o symmetries are
calculated with a multiconfiguration-interaction wave function. A variation method is used for …

Optical studies of multiply-excited states are reviewed with emphasis on emission
spectroscopy. From optical measurements, properties such as excitation energies, lifetimes …

The doubly-excited system of quarters in Li I have been studied by the beam-foil technique
using optical detection in the VUV. The absolute term value of the lowest quartet 1s2s2p 4 P …

Large-scale optimization of nonlinear parameters and tighter error-bound estimates yield an
accurate value, E nr=− 2.178 077 6 (12) au (He 4) for the nonrelativistic energy of He− 1 s 2 …

The paper reviews both the properties and the applications of core-excited metastable
atoms. The production of these atoms by microwaves, pulsed hollow-cathode discharges …

The results of variational calculations using large Hylleraas basis sets are reported for some
low-lying excited 2 S states of the Li i isoelectronic series for 3≤ Z≤ 10. The 3 2 S, 4 2 S …

A beam-foil study of the lithium spectrum above 5000 Å has been undertaken. Four new
observations of core-excited doublet transitions are reported. All of these transitions have …

Core-excited doublet states have been populated by the beam-foil technique. The authors
detected photon emission from these states, thus obtaining information on term energies …