2018 CAP Congress / Congrès de l'ACP 2018

POS-4 Relativistic corrections to nonrelativistic electric dipole transitions in heliumlike atoms

12 Jun 2018, 18:00

1h 30m

SUB McInnes Hall (Dalhousie University)

Poster (Graduate Student) / Affiche (Étudiant(e) du 2e ou 3e cycle) Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC) DAMOPC Poster Session & Finals: Poster Competition and Mingle Session with Industry Partners (8) / Employers | Session d'affiches DPAMPC et finales: Concours d'affiches et rencontres avec partenaires industriels et employeurs (8)

Speaker

Mr Daniel Venn (University of Windsor)

Description

Radiative transition probabilities in atoms are normally calculated from
nonrelativistic wave functions and the electric dipole transition operator.
The theory of relativistic corrections to nonrelativistic energies is
well established in terms of the Breit interaction, but the same is not
true for relativistic corrections to transition probabilities.
Our objectives are first, to start from operators derived
from quantum electrodynamics for the lowest-order relativistic
corrections and verify that they yield the same results as from solutions
to the Dirac equation for the case of hydrogen. And second, apply the same
operators (including two-electron corrections) to the case of electric
dipole transitions in heliumlike ions. In both cases, relativistic
corrections become increasingly important with increasing nuclear charge.