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
Account of the Fine Structure of Hydrogen Atom Levels in the Effective Emission Cross Sections of Balmer Lines Excited by Electron Impact in Gases and Plasma
B. P. Lavrov,A. V. Pipa +1 more
TL;DR: In this paper, a significant difference was found in the emission cross sections and the rate coefficients of direct and dissociative excitation of the H istg α and H istg β lines by electron impact in two limiting cases.
Journal ArticleDOI
Hydrogen release from plasma-facing components into fusion plasmas - recent results from a spectroscopic approach
Ph. Mertens,S. Brezinsek,P.T. Greenland,John D. Hey,A. Pospieszczyk,Detlev Reiter,U. Samm,B. Schweer,Gennady Sergienko,E. Vietzke +9 more
TL;DR: In this paper, it was shown that corrections to the estimated hydrogen flux may be required -a procedure is proposed in order to obtain values for an effective S/XB coefficient for atomic hydrogen (≠15), which denotes the ratio of the collisional ionization (S) to the excitation (X) rate coefficients, divided by the branching ratio B.
Journal ArticleDOI
AB initio valence bond theory
Journal ArticleDOI
TRIATOM, SELECT and ROTLEV ― for the calculation of the ro-vibrational levels of triatomic molecules
TL;DR: The TRIATOM method of solution as mentioned in this paper is a variational approach to solve the problem of rotational basis set parameter optimization, which allows the basis set parameters to be optimized.
Journal ArticleDOI
Symmetry of the atomic electron density in Hartree, Hartree-Fock, and density-functional theories
H. A. Fertig,Walter Kohn +1 more
TL;DR: In this article, the authors analyzed the degree of the violation of spherical harmonic content of the Hartree, Hartree-Fock, and Local Density Approximations and showed that it is small.