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Author Sil, Amar Nath
Source IACS Kolkata
Content type Text
Educational Degree Doctor of Philosophy (Ph.D.)
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics
Subject Keyword Free Atomic Systems ♦ Doubly excited states in Helium like ions ♦ Confined atomic systems ♦ Energy levels of two interacting particles ♦ Different models for cofinement ♦ Time-Dependent Coupled Hartree-Fock theory
Abstract This particular thesis deals with atomic structure and properties connected with it. The workembodied in it may be divided into two categories, e.g.1. Estimation of energy values of the doubly excited (2p2)3Pe state of free atomic systems.2. Calculation of energy levels and structural properties of con ned atomic systems which is themain category.For the rst category using an improved basis set in Hylleraas coordinate and applying Ritzvariationalmethod we have estimated highly precise non-relativistic energy value of the doublyexcited (2p2)3Pe state of helium like systems.For the second category we have calculated the energy levels and other transition properties of oneand two electron systems under external con nement. The external con nement potential consideredhere is either screened Coulomb type which has a sound physical origin or a potential generated dueto strongly coupled plasma described by ion sphere model. The e ects of both environmental andspatial con nements are considered. In this chapter we have also derive an analytical expression forthe energy levels of two interacting mass points under Morse type potential
Education Level UG and PG
Learning Resource Type Thesis