Spectra of hydrogenlike atoms embedded in a Debye plasma are investigated. The state energies and the transition rates are studied using a fully relativistic formalism based on the Dirac equation. The effect of the plasma is described by introducing an exponential screening to the nuclear Coulomb potential (the Debye screening). Systematic trends with respect to both the nuclear charge and the screening parameter are observed for all calculated quantities. The pattern of splittings of ns1/2, np1/2 and np3/2 is modified in a specific way due to the combined relativity and plasma effect. The transition rates decrease with an increase of the Debye parameter as well as with an increase of Z.
Physical Review E
- Pub Date:
- January 2004
- Emission absorption and scattering of electromagnetic radiation;
- Relativistic and quantum electrodynamic effects in atoms and molecules;
- Ab initio calculations;
- Solutions of wave equations: bound states