• A feasibility study of the (3He,8He) reaction with the K600 magnetic spectrometer 

      Swartz, Jacobus Andreas (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: Highly exotic nuclei can be studied in rare reactions using stable beams, with macroscopic intensities, and thick targets. Exotic nuclei are interesting for a number of reasons e.g. for testing nuclear ...
    • Feasibility study of the (α,α'γ) reaction at θlab = 0º using the K600 magnetic spectrometer 

      Erasmus, Wade Luke (Stellenbosch : Stellenbosch University, 2015-04)
      ENGLISH ABSTRACT: The coincident measurement of gamma-rays originating from nuclei excited in light-ion reactions and scattered alpha-particles presents interesting opportunities to characterize the decay path for low ...
    • Flattened Gaussian beam for laser paint removal 

      Du Preez, Neil Carl (Stellenbosch : Stellenbosch University, 2011-03)
      ENGLISH ABSTRACT: Lasers are commonly used in the industry for various applications such as laser cutting, laser drilling, lithography, medical applications, surface cleaning and a myriad of other applications. In any ...
    • A flow equation approach to semi-classical approximations : a comparison with the WKB method 

      Thom, Jacobus Daniel (Stellenbosch : University of Stellenbosch, 2006-12)
      The aim of this thesis is the semi-classical implementation of Wegner’s flow equations and comparison with the well-established Wentzel-Kramers-Brillouin method. We do this by converting operators, in particular the ...
    • Flow equations for hamiltonians from continuous unitary transformations 

      Bartlett, Bruce (Stellenbosch : Stellenbosch University, 2003-03)
      ENGLISH ABSTRACT: This thesis presents an overview of the flow equations recently introduced by Wegner. The little known mathematical framework is established in the initial chapter and used as a background for the entire ...
    • Fluctuations in a melt of flexible polymers with bond-directed dipolar monomers 

      Amuasi, Henry Emmanuel (Stellenbosch : University of Stellenbosch, 2006-12)
      ENGLISH ABSTRACT: static density and magnetic structure functions of a melt of flexible polymers whose monomers possess bond-directed dipoles which interact with each other. In order to observe the effect of screening ...
    • Fluorescence and self-absorption free excitation spectroscopy of carbon monoxide isotopomers in the vacuum ultraviolet 

      De Bruyn, Andre (Stellenbosch : Stellenbosch University, 2017-03)
      ENGLISH ABSTRACT : Carbon Monoxide (CO) is the most abundant heteronuclear diatomic molecule in the universe and has been of great interest in the fields of astrophysics and astronomy. CO is additionally, a prototype ...
    • The formalism of non-commutative quantum mechanics and its extension to many-particle systems 

      Hafver, Andreas (Stellenbosch : University of Stellenbosch, 2010-12)
      ENGLISH ABSTRACT: Non-commutative quantum mechanics is a generalisation of quantum mechanics which incorporates the notion of a fundamental shortest length scale by introducing non-commuting position coordinates. Various ...
    • Formation and characterization of pulsed laser ablated magnetoresistive material 

      Nsengiyumva, Schadrack (Stellenbosch : Stellenbosch University, 2002-12)
      ENGLISH ABSTRACT: In this investigation the formation of thin film manganites and their electrical characteristics is studied. In order to see the effect of oxidation states on magneto-resistivity, 80% of Mn is replaced ...
    • Fuel management study for a pebble bed modular reactor core 

      Movalo, Raisibe Shirley (Stellenbosch : Stellenbosch University, 2010-03)
      ENGLISH ABSTRACT: This dissertation reports on the impact of a set of selected nuclear fuel management parameters on reactor operations of the PBMR core. This is achieved by performing an assessment of the impact of ...
    • Gaussian and non-Gaussian-based Gram-Charlier and Edgeworth expansions for correlations of identical particles in HBT interferometry 

      De Kock, Michiel Burger (Stellenbosch : University of Stellenbosch, 2009-03)
      Hanbury Brown-Twiss interferometry is a correlation technique by which the size and shape of the emission function of identical particles created during collisions of high-energy leptons, hadrons or nuclei can be determined. ...
    • Generation and detection of ultrashort pulses 

      Nwosu, Victoria Onyeka (Stellenbosch : University of Stellenbosch, 2009-03)
      The exciting field of ultrashort laser optics has experienced tremendous growth since it's inception. One of it's branches that has been of continuous interest is the characterization of ultrashort laser pulses ...
    • Geodesics and resonances of the Manko-Novikov spacetime 

      Geyer, Marisa (Stellenbosch : Stellenbosch University, 2013-03)
      ENGLISH ABSTRACT: In this thesis I study compact objects described by the Manko-Novikov spacetime. The Manko- Novikov spacetime is an exact solution to the Einstein Field Equations that allows objects to be black hole-like, ...
    • Image compression using the one-dimensional discrete pulse transform 

      Uys, Ernst Wilhelm (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: The nonlinear LULU smoothers excel at removing impulsive noise from sequences and possess a variety of theoretical properties that make it possible to perform a so-called Discrete Pulse Transform, which ...
    • Introducing organic molecular crystals into ultrafast electron diffraction 

      Rohwer, Andrea Berenike (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: Organic molecular salts have a wide range of physical properties which can be chemically tailored by minor variations of their substituents. These characteristics include high degrees of anisotropy, electrical ...
    • An introduction to general relativity and entropy bounds 

      Kotze, Jacques (Stellenbosch : University of Stellenbosch, 2006-04)
      ENGLISH ABSTRACT: Entropy bounds arise from Black hole thermodynamics and are a significant departure from the conventional understanding of the information in a given region. This shift in paradigm is a consequence of ...
    • The investigation of resveratrol with conventional and ultrafast pump-probe spectroscopy techniques 

      Griessel, Annelle (Stellenbosch : University of Stellenbosch, 2009-03)
      An ultrafast pump-probe spectroscopy experiment was developed in order to investigate the fast photoinduced isomerization reaction of the molecule resveratrol. Characteristics of the resveratrol molecule are discussed, ...
    • Laser induced chlorphyll fluorescence of plant material 

      Ombinda-Lemboumba, Saturnin (Stellenbosch : University of Stellenbosch, 2007-03)
      Imaging and spectroscopy of laser induced chlorophyll fluorescence (LICF) are emerging as useful tools in plant physiology and agriculture since these methods allow an early detection of plant stress and transformation ...
    • Locating the inner edge of a neutron star crust 

      Van Rooy, Milton William (Stellenbosch : University of Stellenbosch, 2010-12)
      ENGLISH ABSTRACT: The overall goal of this project is to study neutron star properties and locate the transition density from the core to the crust using fifteen parameter sets of the effective Skyrme nucleon-nucleon interaction ...
    • Manipulation of short pulses 

      Okoye, Raphael (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: An ultra-fast laser pulse can be described in the time or frequency domain. If the timebandwidth product of an ultra-fast pulse is not satisfied, then the pulse is stretched. Stretching can be described ...