Određivanje Štarkovog pomaka i stope jonizacije atomskih sistema sa jednim i sa dva aktivna elektrona u spoljašnjem električnom polju metodom kompleksne rotacije
Докторанд
Milošević, Milan Z.Ментор
Simonović, NenadЧланови комисије
Mančev, IvanGrozdanov, Tasko
Stamenković, Suzana
Šišović, Nikola
Метаподаци
Приказ свих података о дисертацијиСажетак
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) metho...ds,
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.