Investigating Mechanisms of State Localization in Highly-Ionized Dense Plasmas

Abstract

We present the first experimental observation of K${}_{\beta }$ emission from highly charged Mg ions at solid density, driven by intense x-rays from a free electron laser. The presence of K${}_{\beta }$ emission indicates the $n=3$ atomic shell is relocalized for high charge states, providing an upper constraint on the depression of the ionization potential. We explore the process of state relocalization in dense plasmas from first principles using finite-temperature density functional theory alongside a wavefunction localization metric, and find excellent agreement with experimental results.

22 pages, 13 figures

References in corpus (3)

• Extended First-Principles Molecular Dynamics Method From Cold Materials to Hot Dense Plasmas
• Quantum-mechanical calculation of ionization potential lowering in dense plasmas
• Carbon ionization at Gbar pressures: an ab initio perspective on astrophysical high-density plasmas

Cited by in corpus (4)

• Ionisation Calculations using Classical Molecular Dynamics
• Modelling of warm dense hydrogen via explicit real time electron dynamics: Dynamic structure factors
• Dielectronic satellite emission from a solid-density Mg plasma: relationship to models of ionisation potential depression
• The virial expansion of the Hydrogen equation of state in comparison to PIMC simulations: the quasiparticle concept, IPD, and ionization degree