J.Phys.(London) B19, L593 (1986)

J.Bauche, H.T.Duong, P.Juncar, S.Liberman, J.Pinard, A.Coc, C.Thibault, F.Touchard, J.Lerme, J.L.Vialle, S.Buttgenbach, A.C.Mueller, A.Pesnelle, and the ISOLDE Collaboration

Accurate Wavenumbers of the First Resonance Doublet of Francium Atoms and Relativistic Contribution to Isotope Shifts in the Resonance Doublets of Francium and Caesium Atoms

RADIOACTIVITY ^212,221Fr [from Th, U(p, X), E=600 MeV]; ^{135,137,139,141,143}Cs; measured isotope shifts. Semi-empirical, relativistic Dirac-Fock models.

doi: 10.1088/0022-3700/19/18/001