o:1469 Određivanje Štarkovog pomaka i stope jonizacije atomskih sistema sa jednim i sa dva aktivna elektrona u spoljašnjem električnom polju metodom kompleksne rotacije Determination of the Stark shift and ionization rates for atomic systems with one and with two active elektrons in external electric field by the complex rotation method : doctoral dissertation sr The subject of this Doctoral Dissertation is the study of atomic systems in external static electric field, which can be described using models with one or two active electrons. The main aim of the dissertation is determination of the Stark shift of the lowest state and the ionization rate (or the electron detachment rate in the case of ions) depending on the field strength. The calculations are performed using the complex rotation (scaling) method with the expansion of trial wave functions in the basis of Coulomb Sturmians. The sistems analyzed here are the hydrogen atom, alkali-metal atoms (lithium, sodium, potassium, rubidium, cesium, francium), helium atom, and the hydrogen negative ion. For alkali-metal atoms several types of pseudopotential are used, while the two-electron systems are studied by applying the exact two-electron description as well as single-electron approximations. A good agreement with the results of other authors, who used similar (numerical) methods, and with the formulas of standard theoretical description in the case of weak field, is obtained. An important result is also an analysis of applicability of the methods and models used for the considered system. Bibliografija: listovi 114-117. Datum odbrane: 20.02.2018. Atomic molecular and optical physics 1025607657 91552101 5823 91552100 1025607657 2018-06-18T09:13:49.053Z 45 no 46 mentor Milan Z. 1976- Milošević 2017 63 mentor Nenad Simonović 2017 63 predsednik komisije Ivan. 1960- Mančev 2017 63 član komisije Tasko. Grozdanov 2017 63 član komisije Suzana, 1974- Stamenković 2017 63 član komisije Nikola, 1965- Šišović 2017 VI, 117 str. 1677062 http://phaidrabg.bg.ac.rs/o:1469 no yes 4 2018-06-18T09:13:49.320Z 70 rezonantna stanja, metod kompleksne rotacije, jonizacija,pseudopotencijal, Štarkov pomak resonant states, complex rotation method, ionization,pseudopotential, Stark shift 533.9:537.563.2]:621.3(043.3) P 230 1738 18A07 18A0702 2017