title: Measurement of lithium and sodium metastable quartet atoms in a hollow-cathode discharge.
abstract: We report the measurement, in a pulsed hollow-cathode discharge, of metastable quartet atoms of Li and Na. By using a tunable probe laser, population densities of 3x10(10) atoms cm(-3) and 10(11) atoms cm(-3) were measured in the Li(1s2s2p)4P degrees and Na(2p(5)3s3p)(4)D(7/2) levels, respectively. These levels are candidates for energy storage for extreme-ultraviolet lasers.
authors.forename: D E
authors.initials: DE
authors.lastname: Holmgren
authors.forename: R W
authors.initials: RW
authors.lastname: Falcone
authors.forename: D J
authors.initials: DJ
authors.lastname: Walker
authors.forename: S E
authors.initials: SE
authors.lastname: Harris