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- Nikolić, Dragan,1968-Stockholms universitet,Fysikum (author)
Autoionizing states and their relevance in electron-ion recombination
- BookEnglish2004
Publisher, publication year, extent ...
- Stockholm :Fysikum,2004
- 67 s.
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:su-152
- ISBN:9172659068
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-152URI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Varying forms of title
- Autojonizujuća stanja i njihov značaj u rekombinaciji jona sa elektronima
Notes
- Atomic physics plays an important role in determining the evolution stages in a wide range of laboratory and cosmic plasmas. Therefore, the main contribution to our ability to model, infer and control plasma sources is the knowledge of underlying atomic processes. Of particular importance are reliable low temperature dielectronic recombination (DR) rate coefficients.This thesis provides systematically calculated DR rate coefficients of lithium-like beryllium and sodium ions via ∆n = 0 doubly excited resonant states. The calculations are based on complex-scaled relativistic many-body perturbation theory in an all-order formulation within the single- and double-excitation coupled-cluster scheme, including radiative corrections.Comparison of DR resonance parameters (energy levels, autoionization widths, radiative transition probabilities and strengths) between our theoretical predictions and the heavy-ion storage rings experiments (CRYRING-Stockholm and TSRHeidelberg) shows good agreement.The intruder state problem is a principal obstacle for general application of the coupled-cluster formalism on doubly excited states. Thus, we have developed a technique designed to avoid the intruder state problem. It is based on a convenient partitioning of the Hilbert space and reformulation of the conventional set of pairequations. The general aspects of this development are discussed, and the effectiveness of its numerical implementation (within the non-relativistic framework) is selectively illustrated on autoionizing doubly excited states of helium.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- Electron-ion recombination
- Autoionization
- Electron correlation calculations
- Doubly excited states
- Relativistic many-body perturbation theory
- Coupled-cluster methodology
- Intruder state problem
- Physics
- Fysik
Added entries (persons, corporate bodies, meetings, titles ...)
- Lindroth, Eva (thesis advisor)
- Gribakin, Gleb,DrDept of Applied Mathematics and Theoretical Physics, Belfast, BT7 1NN (opponent)
- Stockholms universitetFysikum (creator_code:org_t)
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