CHARACTERISTICS OF THE HELIUM-LIKE lSe (3l, nl') AUTOIONIZING STATES
نویسندگان
چکیده
منابع مشابه
Excitation of autoionizing states of helium-like ions by scattering of high-energy particles
Two-electron excitations of atoms and ions induced by impact of charged particles and photons are fundamental processes, which have been studied since decades. Along with double ionization and ionization accompanied by simultaneous excitation, double excitation is caused by the interelectronic interaction. Accordingly, the cross sections of these processes turn out to be extremely sensitive to ...
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General formalism of special form of Hylleraas correlated wave functions (SFHCWF) is demonstrated in this paper. The adequacy of the SFHCWF in the description as well as of the singlet than of the triplet excited states of two electron systems is also presented in this work. Application of SFHCWF to the calculations of doubly excited nlnl ′ states (n=2–4) in the helium-like ions is done, using ...
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Two-electron atoms or ions present an excellent testing ground for checking new calculational methods and for studying photoelectron and other atomic processes. A large variety of techniques have been developed to obtain the non-relativistic bound energies and wave functions for the mentioned systems. An excellent review on this topic can be found in [1, 2]. The double basis set method in Hylle...
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Prom high-quality, Pekeris-type electronic wavefunctions we calculate the singlepanicle density p ( r ) and the intracule density h(8) of some low-lying S-states of twoelectron atoms, obtaining very accurate values for the energies, the cuspcondition mtias and some radial expectation values. The effect of electron correlation on both densities for these states is also studied by comparison with...
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While photoionization of helium has been studied thoroughly, beryllium (1s2s), the next helium-like atom in the periodic table, has been investigated only marginally by comparison. Double excitations in the Be valence-shell region have been studied experimentally as well as theoretically in the past. In these experiments [1,2] vacuum sparks were used to photo-excite and –ionize Be atoms and abs...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1989
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1989111