The Impact of Warm Dense Plasma Environments on 2p → 1s Transition of Core-Hole Mg⁷⁺ Ions

The transition properties of 2p → 1s transition and electron pressure on Mg⁷⁺ ions embedded in warm dense plasmas are investigated by the multiconfiguration Dirac–Hartree–Fock (MCDHF) method combined with the self-consistent ion sphere model (SCFISM). The results show, that the numerical value of the energy eigenvalue and transition energy shift agree well with the corresponding analytical value. The transition energies and transition probabilities linear decrease quickly with the increase of free electron densities, but increase slightly with increasing temperatures. A linear relation between log of electron pressure and log of free electron density is fitted.