An investigation is carried out to determine whether or not on the basis of theory one expects axial asymmetry in heavy nuclei. The average one-body potential well is taken as an anisotropic harmonic oscillator, modified by the usual ℓ ∙ s and ℓ² forces. The method of matrix diagonalisation is used to find the eigenvalues. Residual interaction between nucleons is also treated in the pairing approximation. The calculations show that prolate axial symmetry is favoured in each of the nuclei considered. It is possible to indicate the underlying physical reasons for this result. Assuming equilibrium prolate axial symmetry an attempt is made to understand the collective excited levels in the transition region, i.e. the region between spherical nuclei and permanently deformed nuclei. A model calculation is done to show how the levels can be obtained. / Thesis / Doctor of Philosophy (PhD)

<p> A method is described by which spins of nuclear energy levels might be determined, which is a combination of coincidence experiments with Sodium Iodide detectors and angular distribution measurements with high resolution solid state detectors. The method is applied to the 8.87 MeV level in Mg24. </p> / Thesis / Master of Science (MSc)

This thesis is dedicated to the production of electricity with special focus on nuclear energy. Current energy issues in the world are crucial and the today's world situation is putting pressure on energy industry to be sustainable. Goal of this work is to analyze current energy mix in the world and objectively evaluate advantages and disadvantages of different methods of electricity production from economic, as well as ecological and political view.

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No description available.

Thesis (MSc.(Chemistry) - University of Pretoria, 2007. / M. R. Phupheli on cover title differs from the title page where name is written as: Phupheli Milingoni Robert. Confirmed with Student Administration that information correlates with their records. Summary in English.

Thesis (M.A. in National Security Affairs)--Naval Postgraduate School, March 2008. / Thesis Advisor(s): Olsen, Edward A. ; Miller, Alice L. "March 2008." Description based on title screen as viewed on May 15, 2008. Includes bibliographical references (p.63-65). Also available in print.

Thesis (Ph. D.)--University of Wisconsin, 1966. / "Energy level and line tables for one-electron atomic spectra [by] J. D. Garcia and J. E. Mack. Reprinted from Journal of the Optical Society of America, vol. 55, no. 6, 654-685, June 1965"; Inserted between leaves 45-78. Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.

Thesis (doctoral)--University of Uppsala, 2007 / Includes bibliographical references (p. 147-161).

This study involves the investigation of the early actinide systems using ab initio techniques based on density functional theory (DFT). It was motivated by: (i) the incomplete description of these systems using conventional DFT because they are strongly correlated, (ii) the usefulness of these systems in nuclear energy generation, (iii) the complexity that arises in experimentally studying these systems due to their inherent radioactive nature and (iv) their limited availability. The results obtained from this study are divided into two broad sections. The first comprises chapters 3 and 4 while the second comprises chapters 5 and 6. Thorium based compounds are studied in chapters 3 and 4. In the first section, the Hubbard U parameter is not necessary to accurately describe the electronic, elastic and mechanical properties of these systems. In the second, the inclusion of the Hubbard U parameter is shown to be paramount for the accurate description of most compounds considered. Chapter 3 presents the electronic, structural and bonding character of thorium based nitrides. We obtained the result that Th2N2NH, which is crystallographically equivalent to metallic Th2N3, is insulating. Chapter 4 demonstrates that the formation of a meta-stable thorium-titanium based alloy is plausible and also further information on bonding, electronic and elastic properties of the determined meta-stable alloy is provided. This has provided important new knowledge about these bulk systems. In Chapter 5 the DFT + U based study on Pa and its oxides is presented. The electronic, structural and bonding character of these systems was studied. We found that PaO2 is a Mott-Hubbard insulator with an indirect band gap of 3.48 eV within the generalized gradient approximation GGA + U. Chapter 6 discusses various actinide nitrides. We explored the electronic properties, elastic properties, lattice dynamics and the energetics of the various compounds using GGA + U. Also, we investigated the e ect of the Hubbard U parameter and magnetic configuration on these systems. The use of the DFT + U based method provides a rapid way to study strongly correlated systems, while other methods such as Hybrid functional,GW, DMFT+DFT, etc. are highly intensive, computationally speaking. Finally, the results obtained with the inclusion of this ad hoc parameter give a very good description of these systems. / Thesis (PhD)--University of Pretoria, 2014. / gm2014 / Physics / unrestricted