QED calculation of then=1andn=2energy levels in He-like ions

. at om - p h ] 1 5 Ja n 20 05 QED calculation of the n = 1 and n = 2 energy levels in He - like ions

We perform ab initio QED calculations of energy levels for the n = 1 and n = 2 states of He-like ions with the nuclear charge in the range Z = 12-100. The complete set of two-electron QED corrections is evaluated to all orders in the parameter αZ . Uncalculated contributions to energy levels come through orders α3(αZ)2, α2(αZ)7, and higher. The calculation presented is the first treatment for e...

Energy approach to consistent QED theory for calculation of electron-collision strengths: Ne-like ions.

An energy approach based on consistent QED theory is outlined which presents the energy of any decaying atomic state in complex form with the imaginary part responsible for different types of decays. The aim is to study, in a uniform manner, elementary processes responsible for emission-line formation in plasmas. The energy approach is generalized here for the collisional problem. Numerical res...

Variational calculation for the ground state of lithium and the QED corrections for Li-like ions.

QED calculation of the nuclear magnetic shielding for hydrogen-like ions

V. A. Yerokhin, 2, 3 K. Pachucki, Z. Harman, 2 and C. H. Keitel Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, D 69117 Heidelberg, Germany ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, D-64291 Darmstadt, Germany St. Petersburg State Polytechnical University, Polytekhnicheskaya 29, St. Petersburg 195251, Russia Faculty of Physics, Uni...

Erratum: Variational calculation for the ground state of lithium and QED corrections for Li-like ions