Journal ArticleDOI
Approximated dynamical symmetry of two-electron atoms
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In this paper, the eigenstates of a new set of approximate constants of the motion of two-electron atoms are very nearly those obtained by diagnolizing 1/r ij within a complex.About:
This article is published in Chemical Physics Letters.The article was published on 1973-12-01. It has received 96 citations till now.read more
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Book ChapterDOI
Coherence and correlations in fast ion-atom collisions
TL;DR: Inelastic ion-atom collisions are characterized by a rearrangement of the electronic charge cloud of the collision partners as mentioned in this paper, where electrons may be lifted from the ground state to excited states (direct excitation of the target or projectile) or may be lost during the collision (ionization).
Book ChapterDOI
Dynamic Symmetries in Nuclei, Atoms and Molecules
TL;DR: In this article, the authors summarize recent applications of symmetry considerations to the study of complex spectra of nuclei, atoms and molecules, and summarize the application of symmetry in the analysis of these spectra.
Book ChapterDOI
Probing The Collective and Independent-Particle Character of Atomic Electrons
TL;DR: In this paper, the authors developed a model of the hydrogen atom and other one-electron atoms based on the concepts of discrete, stationary states and quantized energies and angular momenta of these atoms.
Journal ArticleDOI
Symmetry in atomic and molecular systems
TL;DR: In this paper, the authors define alternative categorizations to which real atomic and molecular systems may correspond, by constructing idealized models to correspond to limiting cases, and then decide what are the best approximations and starting points for making mathematical representations of the real systems.
Journal ArticleDOI
High-lying doubly excited states of He and H−: electron correlations and classification schemes
TL;DR: In this paper, high-lying doubly excited states of He and H− are studied and the intrinsic properties of their wave-functions are reported and compared to available data from the literature.
References
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Journal ArticleDOI
On a screening theory of atomic spectra
TL;DR: In this article, a theoretical scheme for describing atomic spectra is developed, which differs from the current one in three main ways: (i) the nuclear charge Z enters explicitly into all predictions made with the new scheme, and (ii) certain effects of configuration interaction are allowed for in the first approximation.
Journal ArticleDOI
Classification of Two-Electron Excitation Levels of Helium
J. Cooper,Ugo Fano,F. Prats +2 more
TL;DR: In this article, a classification of the states that produce the autoionizing lines observed in spectra of He is considered, and properties of these states are discussed. (D.C.W.)
Journal ArticleDOI
Wigner Coefficients for the R4 Group and Some Applications
TL;DR: In this article, the R4 spherical harmonics and their properties are obtained as specializations of the general formulas, and their physical application to the problem of geometrizing the Coulomb field is briefly discussed.
Journal ArticleDOI
Close-Coupling Calculations of Electron-Impact Excitation of the 2s State and Autoionization Below the n=3 Level in He +
Journal ArticleDOI
A simple O(4,2) approximation of hydrogenic coulomb integrals
Carl E. Wulfman,Sukeyuki Kumei +1 more
TL;DR: In this article, Coulomb integrals for electrons with hydrogenic wavefunctions are expressed in terms of operations of the Lie algebra of the group O(4,2) × O( 4,2).
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