Description
Title: Applications to Astrophysics of Multiconfiguration Dirac-Hartree-Fock Calculations with Spectroscopic Accuracy
Abstract: Atomic information, including wavelengths, spectroscopic labels, broadening parameters, and transition rates, is required for numerous applications, particularly in plasma diagnostics, as well as for deciphering the spectra of far-off astrophysical objects. With its limited resources, the experiment is unlikely to ever be able to offer a comprehensive dataset on any atomic system. The majority of the data must instead be calculated. Theoretical atomic physics derives and employs computations that produce the desired results based on fundamental concepts and well-founded approximations. We discuss the state-of-the-art and most recent advancements in fully relativistic multiconfiguration Dirac-Hartree-Fock methods and demonstrate how large-scale calculations can produce transition energies with spectroscopic accuracy, i.e., an accuracy comparable to that obtained from observations, as well as transition rates with estimated uncertainties of a few percent for a variety of ions. Finally, we talk about upcoming developments and difficulties.
Keywords: transition energies; lifetimes; transition rates; multiconfiguration Dirac-Hartree-Fock
Paper Quality: SCOPUS / Web of Science Level Research Paper
Subject: Physics
Subject Category: Atomic and Molecular Physics, and Optics
Writer Experience: 20+ Years
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