Abstract
Motivated by spectroscopic analysis of astrophysical and laboratory plasma, this thesis concerns the fundamental structure and spectral properties of atoms and their ions. The multiconfiguration DiracHartreeFock (MCDHF) method is used to predict the emission or absorption of radiation, by atomic systems in general, and of heavy and highly charged ions in particular.
The first set of publications, paper AI to AVII, concerns abinitio predictions of atomic structure and radiative transition rates, with a particular focus on relativistic and electron correlation effects. Systematic and largescale MCDHF calculations have been carried out, often in combination with electronbeam ion trap experiments.
The second set, BI to BVIII, presents a rigorous treatment of effects from nonspherical interactions with certain nuclei  hyperfine interaction  and external magnetic fields  Zeeman interaction  on atomic spectra. A general methodology has been developed and implemented in computer codes to include these perturbations in the wavefunctions and to determine their impact on the resulting spectra. Of particular interest are spectral intensity redistributions and unexpected transitions, and their applications to stellar abundance analyses, magneticfields effects in storagering experiments, and coronal magneticfield measurements.
The first set of publications, paper AI to AVII, concerns abinitio predictions of atomic structure and radiative transition rates, with a particular focus on relativistic and electron correlation effects. Systematic and largescale MCDHF calculations have been carried out, often in combination with electronbeam ion trap experiments.
The second set, BI to BVIII, presents a rigorous treatment of effects from nonspherical interactions with certain nuclei  hyperfine interaction  and external magnetic fields  Zeeman interaction  on atomic spectra. A general methodology has been developed and implemented in computer codes to include these perturbations in the wavefunctions and to determine their impact on the resulting spectra. Of particular interest are spectral intensity redistributions and unexpected transitions, and their applications to stellar abundance analyses, magneticfields effects in storagering experiments, and coronal magneticfield measurements.
Translated title of the contribution  Teoretisk Atomspektroskopi av Jordbundna och Stellära Plasman 

Original language  English 
Qualification  Doctor 
Awarding Institution 

Supervisors/Advisors 

Thesis sponsors  
Award date  2016 Oct 21 
Place of Publication  Lund 
Publisher  
ISBN (Print)  9789176239964 
ISBN (electronic)  9789176239971 
Publication status  Published  2016 Sept 
Bibliographical note
Defence detailsDate: 20161021
Time: 09:15
Place: Physicum, Rydberg Lecture Hall, Sölvegatan 14A, Lund
External reviewer(s)
Name: Lindroth, Eva
Title: Professor
Affiliation: Stockholm University, Department of Physics

Subject classification (UKÄ)
 Atom and Molecular Physics and Optics
 Astronomy, Astrophysics and Cosmology
 Fusion, Plasma and Space Physics
Keywords
 atomic structure
 atomic processes
 computer simulation
 electron correlation
 relativistic atomic theory
 plasma spectroscopy
 Zeeman effect
 magnetic fields
 hyperfine structure
 solar corona
 space weather
 stellar abundances
 Fysicumarkivet A:2016:Grumer