Detailed Atomic Structure of Neutral and Near-Neutral Systems

This paper highlights the issues which need to be addressed in undertaking accurate calculations of multi-electron atoms and ions, particularly at or near the neutral end of an isoelectronic sequence. We illustrate the processes through two calculations--of transitions in Cl I and Sn II--and discuss...

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Bibliographic Details
Main Authors: Oliver, Paul, Hibbert, Alan
Format: Conference Proceeding
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
CHARGED PARTICLES
CHLORINE
CLOSED PLASMA DEVICES
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
EVALUATION
FERMIONS
FINE STRUCTURE
HALOGENS
IONIZATION
IONS
LEPTONS
METALS
NONMETALS
PLASMA
THERMONUCLEAR DEVICES
TIN
TIN IONS
TOKAMAK DEVICES
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Summary:This paper highlights the issues which need to be addressed in undertaking accurate calculations of multi-electron atoms and ions, particularly at or near the neutral end of an isoelectronic sequence. We illustrate the processes through two calculations--of transitions in Cl I and Sn II--and discuss the convergence of our results as well as updating previous work. In particular, in the case of Cl I, we propose new identifications of the levels involved in certain transitions which are important in determining the abundance of chlorine in the inter-stellar medium (ISM), while in singly ionised tin, our calculations suggest a re-evaluation of the the abundance of tin in the ISM. We also confirm recent identification of Sn II lines seen in tokamak plasmas.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3585807