Abstract
Isotopes of produced by spallation of lanthanum and separated in mass by the ISOLDE on-line facility have been transformed into an atomic beam which is illuminated with a tunable cw dye laser. From the sensitive detection of the optical resonance lines at 459 nm, the hyperfine structure of , , and has been determined. The interpretation of isotope shifts, in terms of variation of charge radii, is discussed.
- Received 17 April 1978
DOI:https://doi.org/10.1103/PhysRevLett.41.459
©1978 American Physical Society