Self-consistent screened hydrogenic model based on the average-atom model: comparisons with atomic codes and plasma experiments

AGUIAR, JULIO C.; ROCCO, HÉCTOR O. DI; LANZINI, FERNANDO

EUROPEAN PHYSICAL JOURNAL D

SPRINGER

Lugar: Berlin; Año: 2021 vol. 75

1434-6060

Here we present a self-consistent relativistic screened-hydrogenic model (SHM) based on theaverage-atom model (AAM) for e¤ective calculation of the energy levels of many-electron atomsimmersed in plasmas. In addition, we use diverse atomic codes using the con?guration interaction method, to calculate the infuence of electron density and temperature on the spectra of thediverse ionic states present in a plasma focus device, as well as in other dense plasma systems.The parameters of the AAM are introduced in a coupled system of Saha equations to ?nd thedensities and abundances of the di¤erent ions to obtain the e¤ective charges and eigenenergies ofhydrogenic bound states within the framework of a self-consistent Ion Sphere Model. The resultsof our calculations are compared with experimental data obtained by different authors and somediscrepancies between theoretical and experimental spectra are explained.