Relativistic studies of atoms and ions with complex configurations

Rudzikas, Zenonas

doi:10.1002/qua.560250105

Int J of Quantum Chemistry

1984

DOI: 10.1002/qua.560250105

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Relativistic studies of atoms and ions with complex configurations

Zenonas Rudzikas

Abstract: The method of the relativistic investigation of the energy spectra and the electronic transitions in the case of complex configurations, based on the theory of the irreducible tensorial operators and the genealogical coefficients, is described. The use of the quasispin and isospin technique in the relativistic approximation is discussed. Expressions are presented for electric multipole transition probabilities for general values of the gauge condition of electromagnetic field potential.

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Isospin basis for atoms in relativistic approximation

Šimonis

Kaniauskas

Rudzikas

1984

Int J of Quantum Chemistry

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The isospin basis is put into operation for investigation of atomic configurations, having two shells of equivalent electrons, characterized by the same orbital (LS coupling) or total ( j j coupling) angular momenta of each electron. Tensorial properties of both the operators and the wave functions are studied in this basis. The two-particle operator is expressed in terms of the tensors irreducible in the isospin space. The problem of the additional classification of the levels is considered. The accuracy of the quantum numbers of the isospin basis in j j coupling scheme is discussed.

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Isospin basis for atoms in relativistic approximation

Šimonis

Kaniauskas

Rudzikas

1984

Int J of Quantum Chemistry

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Commission 14: Atomic and Molecular Data

Gabriel¹,

Nicholls²,

Johnson³

et al. 1985

Trans. Int. Astron. Union

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As the pool of fundamental data available to astronomers continues to increase, the question of how best to promote the necessary cross-discipline interaction becomes increasingly important. Commission 14 has traditionally played an important role in this activity, by publishing triennial reports in the IAU Proceedings, as well as by responding to more specific requests for data. We are fortunate in having the support for these activities of some energetic Working-Groups and Chairmen, whos contributions to the present report are very gratefully acknowledged. With the expansion of available data it is appropriate that these reports take on more and more the form of references to review articles and other more specific data bases. The question of whether the field of activity of the Commission should be enlarged was discussed at Patras and will be reviewed again at the Delhi meeting. One possibility is to include nuclear processes and fundamental particle physics. On the other hand a rationale for limiting the scope of our activities might be the direct application to astronomical observations. Astronomical theorists are usually better placed to access the fundamental data themselves. The interaction between fundamental physics and astronomy will in general take two forms. There is the essential service role of making data available in a usable form. However, we should surely aim to stimulate the other very profitable mode, in which the two disciplines are brought together to form real scientific collaborations, in order to research the problems of astronomy.

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Commission 14: Atomic and Molecular Data

Wahlgren¹,

Dishoeck

Federman³

et al. 2011

Proc. IAU

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The main purpose of Commission 14 is to foster interactions between the astronomical community and those conducting research to provide data vital to reducing and analysing astronomical observations and conducting theoretical investigations. One way that the Commission accomplishes this goal is through triennial compilations on recent relevant research in astronomy, atomic, molecular and solid state physics, and related fields of chemical analysis. The most recent compilations appear in the accompanying set of Commission 14 WG Triennial Reports, which were produced by members of the Working Groups and the Organizing Committee of Commission 14.

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Relativistic studies of atoms and ions with complex configurations

Cited by 5 publications

References 5 publications

Isospin basis for atoms in relativistic approximation

Isospin basis for atoms in relativistic approximation

Commission 14: Atomic and Molecular Data

Commission 14: Atomic and Molecular Data

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