Titlebook: Atomic Physics 3; Proceedings of the T Stephen J. Smith (Chairman, Organizing Committee), Conference proceedings 1973 Plenum Press, New Yor

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Semantic Properties of the Models,re bound in the Coulomb field of an atomic nucleus. The exotic atoms are essentially hydrogen-like atoms except for their unusually large energy scales and drastically reduced orbital radii, hence the name. Their life spans from birth to death last only for very brief moments. The transient existenc

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The Axiomatic Class of Plausible Models,ents can be performed to high precision and provide an excellent test of the theory of three-electron atomic systems. Studies of one- and two-electron systems have been very fruitful. The work of Lamb and others on the fine structure of hydrogen has provided a cornerstone of quantum electrodynamics

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Implementation of Quantifiers in the Models,based on the variation principle. The theory of using non-orthogonal (Hartree-Fock or analytical) radial orbitals is indicated. The improved methods of the atomic spectra theory are characterized. These are: a) method of superposition of configurations, b) extended method of calculation, and c) meth

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Implementation of Quantifiers in the Models,ion, energy matrices including (only) the electrostatic interaction . and the spin-orbit interaction. within a single configuration, or a very small number of adjacent configurations, were constructed and diagonalized. This led to a rather poor agreement between calculated and observed energy levels

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Semantic Properties of the Models,iculties encountered in calculating atomic scattering amplitudes. In this paper we discuss the complex rotation method, in which all coordinates are transformed by rj → rj e.. Previous authors . have pointed out that this transformation makes it possible to describe the (complex) energy of a resonan

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Semantic Properties of the Models,tion of the properties of low-temperature plasmas, and in the fields of upper-atmosphere physics and astrophysics. Experimental data are rather scarce and uncertain, the electron affinities being too low (∿0.5 eV) for application of standard photoabsorption techniques near threshold. Even if this we