https://doi.org/10.1007/s100530050146
Relativistic and many-body effects in K, L, and M shell
ionization energy for elements with
and the
determination of the 1s Lamb shift for heavy elements
1
Laboratoire Kastler-Brossel (
Unité Associée No. 18 du CNRS) ,
École Normale Supérieure et
Université Pierre et Marie
Curie, Case 74, 4 place Jussieu,
75252 Paris Cedex 05, France
2
Department of Atomic Physics, Stockholm University,
104 05 Stockholm, Sweden
Corresponding author: a paul@spectro.jussieu.fr
Received:
25
February
1998
Accepted:
31
March
1998
Published online: 15 July 1998
We report on a calculation of K, L and M inner-shell ionization energy
in atoms with atomic numbers in the range 
.
Many-body effects are evaluated for all n=1, 2, and 3 hole
states. Those include correlation and effects due to the
auto-ionizing nature of the hole states (Auger shift). For high Z
we add recent corrected nuclear polarization, and several second-order
vacuum polarization corrections. K and L ionization energies are
compared with experimental X-ray absorption edges measurements.
Excellent agreement with rare gazes and metal vapor measurements is
found. We also compare our calculations with X-ray transition
energies for all K and L lines that involve K, L and M holes. Finally
we use K X-ray lines to deduce an hydrogenlike 1s Lamb shift for
several heavy elements, with far better accuracy than has been
obtained by direct measurements of hydrogenlike ions.
PACS: 31.10.+z – Theory of electronic structure, electronic transitions, and chemical binding / 31.15.Ar – Ab initio calculations / 31.30.Jv – Relativistic and quantum elecrodynamic effects in atoms and molecules
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
