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Calculating opacities for a wide range of plasma conditions (i.e.temperature, density, element) requires detailed knowledge of the plasmaconfiguration space and electronic structure. For plasmas composed of heavierelements, relativistic effects are important in both the electronic structureand the details of opacity spectra. We extend our previously describedsuperconfiguration and super transition array capabilities [N. M. Gill et al.,JPB, 56, 015001 (2023)] to include a fully relativistic formalism. The use ofhybrid bound-continuum supershells in our superconfigurations demonstrates theimportance of a consistent treatment of bound and continuum electrons in denseplasma opacities, and we expand the discussion of these consequences to includeissues associated with equation of state and electron correlations betweenbound and continuum electrons.

The STAG Code: A Fully Relativistic Super Transition Array Calculation Using Green's Functions