title: Accurate evaluations of the field shift and lowest-order QED correction for the ground 1¹S-states of some light two-electron ions.
abstract: Mass-dependent and field shift components of the isotopic shift are determined to high accuracy for the ground 1(1)S-states of some light two-electron Li(+), Be(2+), B(3+), and C(4+) ions. To determine the field components of these isotopic shifts we apply the Racah-Rosental-Breit formula. We also determine the lowest order QED corrections to the isotopic shifts for each of these two-electron ions.
authors.affiliation: Department of Applied Mathematics, University of Western Ontario, London, Ontario N6H 5B7, Canada.
authors.forename: Alexei M
authors.initials: AM
authors.lastname: Frolov
authors.affiliation: Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Newfoundland A1C 5S7, Canada.
authors.forename: David M
authors.initials: DM
authors.lastname: Wardlaw