Theoretical Auger and photoionization studies for open-shell atoms and ions

Theoretical study of the KLL dielectronic recombination for highly charged iodine ions

“…O (L) is the tensor operator of the radiative electromagnetic field with rank L. The rate A a ji for autoionization from the resonant state j to the non-resonant electron-continuum state i is given by [14] (7)…”

“…self-energy and vacuum polarization effects, are also included in the computations as a perturbation. The radiative decay rates and the Auger decay rates are calculated using the developed REOS99 [18] and AUGER [14] programs, respectively.…”

Angular correlations in radiative cascades following resonant electron capture by highly charged ions

“…(4)- (6) and (13)-(15), any analysis of the DR angular correlation function can be traced back to the evaluation of the matrix elements α a J a ||V ||α 0 J 0 ,lj : J a and α a J a ||H γ (pL)||α b J b that describe the resonant electron capture and the subsequent radiative decays. A number of approaches have been developed in the past in order to calculate these amplitudes [31][32][33]. In the present work we employ two methods which are known to be justified in the high-Z regime.…”

Isotope shift calculations for open-shell atoms and ions: an extension to the RATIP program

“…As indicated in this figure, a long write-up for the Cpc library [21] is available for several of the main components in order to describe their theoretical background and a few examples of how to use the code. Other components still need improvements and a number of critical tests before they can be distributed together with the Ratip code [1,2]; for Main structure of the Ratip package which is divided into individual program components. For a few components, a long write-up has been published in the Cpc library [21] , while others (with a dashed frame) still need further tests and improvements before they will be made available to the public.…”

“…To provide a powerful and versatile environment for the computation of different (relativistic) atomic transition and ionization properties, the Ratip program [1,2] has been developed in the framework of the multiconfiguration Dirac-Fock (MCDF) method [3] during the last decade. This program applies the wave functions from the well-known atomic structure code Grasp92 [4] in order to support the computation of photoionization and Auger parameters, radiative and dielectronic capture cross sections and several other properties.…”