In-source laser spectroscopy of dysprosium isotopes at the ISOLDE-RILIS

Abstract A number of radiogenically produced dysprosium isotopes have been studied by in-source laser spectroscopy at ISOLDE using the Resonance Ionization Laser Ion Source (RILIS). Isotope shifts were measured relative to 152 Dy in the 4 f 10 6 s 2 5 I 8 (gs) → 4 f 10 6 s 6 p ( 8 , 1 ) 8 o ( 418.8 nm vac ) resonance transition. The electronic factor, F , and mass shift factor, M , were extracted and used for determining the changes in mean-squared charge radii for 145 m Dy and 147 m Dy for the first time.