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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Triplet—Triplet Annihilation and Delayed Fluorescence in Molecular Aggregates
TL;DR: In this article, the authors studied the triplet-triplet annihilation in pure and mixed organic crystals and showed that triplet excitation migration may proceed from trap to trap on a time scale which is short compared with the long triplet state lifetime but which is long compared with normal fluorescence lifetime.
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Pairing forces and nuclear collective motion
TL;DR: In this article, the influence of pairing forces on the collective vibrations in nuclei is studied using a perturbation expansion, and the result is found to agree with that given by Belyaev using the superconductivity approximation except that here the number of particles is conserved.
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Theory of Spin-Orbit Coupling in Atoms. I. Derivation of the Spin-Orbit Coupling Constant
M. Blume,R. E. Watson +1 more
TL;DR: In this paper, an exact expression for the spin-orbit coupling constant was derived within the Hartree-Fock description of the atom by considering the two body mutual spinorbit interaction between electrons.
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Solar UV and X-ray spectral diagnostics
Giulio Del Zanna,Helen E. Mason +1 more
TL;DR: In this article, a review of the diagnostic methods used to measure electron densities, electron temperatures, differential emission measure (DEM), and relative chemical abundances is presented, focusing on the optically thin emission from the solar atmosphere, mostly found at UV and X-ray (XUV) wavelengths.
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The Theory of Magnetic Resonance Experiments on Salts of the Rare Earths
R. J. Elliott,K. W. H. Stevens +1 more
TL;DR: In this paper, a general account of paramagnetic resonance in rare-earth crystals is given, assuming that the crystalline electric field splitting is less than the spin-orbit splitting.