title: Even-parity autoionizing states in neutral sodium (350-400 A).
abstract: A recently developed laser-excitation technique has been used in the first photoabsorption studies of the even-parity 2p(5)3s3p and 2p(5)3s4p autoionizing levels of Na I. The observed-level values are compared, where applicable, with those previously obtained by ejected-electron spectroscopy of collisionally excited Na, and the identifications are confirmed by ab initio calculations.
authors.forename: J
authors.initials: J
authors.lastname: Sugar
authors.forename: T B
authors.initials: TB
authors.lastname: Lucatorto
authors.forename: T J
authors.initials: TJ
authors.lastname: McIlrath
authors.forename: A W
authors.initials: AW
authors.lastname: Weiss