Reduction of the ionization energy for 1s-electrons in dense aluminum plasmas

[摘要] The properties of a bound multi-electron system immersed in a plasma environment are strongly modified by the surrounding plasma. In particular, the modification of the ionization energy is described by the electronic self-energy within the framework of the quantum statistical theory. We present the energy shift of the eigenstates and the lowering of the continuum edge of free electrons in a plasma. The reduction of the ionization potential is determined by their difference. This ionization potential depression for the 1s-levels in dense aluminum plasmas is calculated. Comparisons with other theories and the experimental data are shown for aluminum plasma at solid density 2.7 g/cm3.

[发布机构] Universität Rostock, Institut für Physik, Rostock; 18051, Germany^1;University of Western Australia, School of Physics, Crawley; WA; 6009, Australia^2

[关键词] Aluminum plasmas;Eigenstates;Energy shift;Free electron;Multielectron system;Plasma environments;Quantum statistical theory;Solid density