The third spectrum of rhenium (Re III): Analysis of the (5d5 + 5d46s)–(5d46p + 5d36s6p) transition array

Azarov, V I; Gayasov, Robert R.

doi:10.1016/j.adt.2017.08.003

Cited by 3 publications

(3 citation statements)

References 28 publications

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“…The term analysis of complex spectra like Mn IV [10], Re III [11] and Os III [12] only came within reach by the accuracy of orthogonal operator predictions. Such predictions concern both energy levels and electric dipole intensities.…”

Section: Applicationsmentioning

confidence: 99%

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Orthogonal Operators: Applications, Origin and Outlook

Uylings

Raassen

2019

Atoms

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Orthogonal operators can successfully be used to calculate eigenvalues and eigenvector compositions in complex spectra. Orthogonality ensures least correlation between the operators and thereby more stability in the fit, even for small interactions. The resulting eigenvectors are used to transform the pure transition matrix into realistic intermediate coupling transition probabilities. Calculated transition probabilities for close lying levels illustrate the power of the complete orthogonal operator approach.

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Section: Applicationsmentioning

confidence: 99%

“…There are three subspaces of operators that are orthogonal by their tensorial character: expressed as double tensors with ranks k = 0, 1, 2 in separate spin-and orbital spaces [31], one distinguishes: T (00)0 → electrostatic, T (11)0 → spin-orbit and T (22)0 → spin-spin.…”

Section: Construction Of An Orthogonal Setmentioning

confidence: 99%

Orthogonal Operators: Applications, Origin and Outlook

Uylings

Raassen

2019

Atoms

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“…The power of the orthogonal operators method was recently demonstrated by the successful analyses of the Re III and Os III spectra by Azarov and Gayasov [30] and Azarov et al [31]. The last previous attempt to analyze these spectra was made in 1993 by Wyart et al [32], who deemed it hopeless, despite the large astronomical interest in these spectra.…”

Section: Semiempirical Codes With Parametric Fittingmentioning

confidence: 99%

Cowan Code: 50 Years of Growing Impact on Atomic Physics

Kramida

2019

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The famous Cowan’s book, “The Theory of Atomic Structure and Spectra”, published in 1981, and his suite of computer codes based on it, continue to be highly influential in atomic physics and many other research areas. As of September 2018, there have been more than 5000 citations to Cowan’s book and codes, and each year adds about 150 citations to this list. The present work briefly describes what these codes do and why they are responsible for most of the current progress in the analyses of atomic spectra. Various modifications of these codes, including my own, will also be described.

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