Experimental and theoretical study of QED corrections in the ground state of heliumlike iron

The energy of the Lyβ and Lyγ lines of heliumlike iron has been measured with a precision of 25 ppm. The study of these transitions involving levels of high principal quantum number (n=3 andn=4) provides us with informations on the ground state 1¹ S ₀ of the ion. The experimental values are compared to MCDF calculations including QED two-body corrections.     

Lifetime Measurement of the Metastable 23 P 0 State in Helium-like 197Au

Hyperfine Interactions - The determination of atomic lifetimes offers the possibility to investigate various aspects of the atomic structure. In the case of helium-like 197Au with nuclear spin 3/2,...