Open Access
The Theory of Atomic Spectra
Edward U. Condon,G. H. Shortley +1 more
- pp 460
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TLDR
In this paper, the quantum mechanical method is applied to the theory of complex spectra and the Russell-Saunders case is used to obtain the energy levels of one-electron spectra.Abstract:
1. Introduction 2. The quantum mechanical method 3. Angular momentum 4. The theory of radiation 5. One-electron spectra 6. The central-field approximation 7. The Russell-Saunders case: energy levels 8. The Russell-Saunders case: eigenfunctions 9. The Russell-Saunders case: line strengths 10. Coupling 11. Intermediate coupling 12. Transformations in the theory of complex spectra 13. Configurations containing almost closed shells. X-rays 14. Central fields 15. Configuration interaction 16. The Zeeman effect 17. The Stark effect 18. The nucleus in atomic spectra Appendix. Universal constants and natural atomic units.read more
Citations
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Journal ArticleDOI
Theoretical study of the Rydberg excited electronic states of Ar+2
TL;DR: The first Rydberg states of the Ar+2 molecular ion dissociating into Ar+(3p5,2P) +Ar*(3p54s,3,1P) were calculated using multireference configuration interaction and effective core pseudopotentials.
Journal ArticleDOI
Laser fluorescence excitation spectroscopy of BNe electronic states correlating with the excited valence B(2s2p2 2D) atomic asymptote
TL;DR: In this article, the laser fluorescence excitation spectrum of the BNe van der Waals complex, in the vicinity of the 2s2p2 2D←2s22p/2P transition at 208.9 nm, is reported.
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Regular Article: Efficient and Rapid Evaluation of Three-Center Two Electron Coulomb and Hybrid Integrals Using Nonlinear Transformations
H. Safouhi,P. E. Hoggan +1 more
TL;DR: In this paper, it was shown that the hypergeometric function can be expressed as a finite expansion and that the integrand involving this series and a product of Bessel functions satisfies a linear differential equation with coefficients having a power series expansion in the reciprocal of the variable suitable for application of the nonlinear D- and D-transformations.
Journal ArticleDOI
The Spectrum of Singly Ionized Scandium, Sc II
Sveneric Johansson,Ulf Litzén +1 more
TL;DR: In this paper, the Sc II spectrum, emitted from a pulsed hollow-cathode discharge, has been studied in the region 1100-11 000 A, where 777 lines have been classified.
Journal ArticleDOI
The principles of the double resonance method applied to gas cell frequency standards
M. Arditi,T.R. Carver +1 more
TL;DR: In this paper, the physical principles of the double resonance method used in this device are described, and the factors affecting the accuracy of the gas cell frequency standard are discussed, together with the solutions adopted for optimum results.