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  Higher-order interference and single-system postulates characterizing quantum theory 

  Barnum, Howard; Muller, Markus P.; Ududec, Cozmin (Institute of Physics, 2014-12-10)

  We present a new characterization of quantum theory in terms of simple physical principles that is different from previous ones in two important respects: first, it only refers to properties of single systems without any ...
  
  
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  Exchange-induced crystallization of soft-core bosons 

  Cinti, Fabio; Boninsegni, Massimo; Pohl, Thomas (Institute of Physics, 2014-03-28)

  We study the phase diagram of a two-dimensional assembly of bosons interacting via a soft-core repulsive pair potential of varying strength, and compare it to that of the equivalent system in which particles are regarded ...
  
  
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  Development of diode end-pumped Nd:YLF lasers at 1314 nm for high power operation 

  Botha, Roelf Cornelis (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : Please refer to the full text abstract.
  
  
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  Novel implementation of a phase-only spatial light modulator for laser beam shaping 

  Burger, Liesl (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : The phase-only spatial light modulator (SLM) has revolutionized the field of laser beam shaping. In this thesis we describe in detail the considerations necessary to build a “digital laser” which ...
  
  
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  Middle-infrared laser sources 

  Koen, Wayne Sean (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : Both bulk solid-state mid-infrared lasers and amplifier systems based on Tm3+ and Ho3+, as well as mid-infrared optically pumped molecular gas lasers based on HBr were developed and studied. An efficient ...
  
  
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  Development and characterisation of a Nd:YAG pumped wavelength tunable VUV light source 

  Rigby, Charles Ian (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : Please refer to the full text abstract.
  
  
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  Surface enhanced Raman spectroscopy (SERS) of amino acids 

  Pfukwa, Ngaatendwe Buhle Cathrine (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : Raman spectroscopy (RS) is an invaluable technique for sample identification. This method requires little sample preparation and is not completely non-invasive. The intensity of Raman scattered light can ...
  
  
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  Development of a kHz optical remote sensing system for in situ insect monitoring 

  Gebru, Alem Kindeya (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : In this work we have developed a kHz optical remote sensing system for in situ insect monitoring applications. This is an active and passive remote sensing system based on laser and sunlight. This system ...
  
  
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  Multiple chiral bands in 193Tl 

  Ndayishimye, Joram (Stellenbosch : Stellenbosch University, 2016-03)

  ENGLISH ABSTRACT : In order to extend knowledge about chirality in A ∼ 190 mass region, experiments were performed at iThemba LABS for γ−spectroscopy studies in 192,193Tl. Previous level scheme of 193Tl was considerably ...
  
  
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  Ultrafast dynamics of excitons in tetracene single crystals 

  Birech, Zephania; Schwoerer, Markus; Schmeiler, Teresa; Pflaum, Jens; Schwoerer, Heinrich (AIP Publishing LLC, 2014-03-18)

  Ultrafast exciton dynamics in free standing 200 nm thin tetracene single crystals were studied at room temperature by femtosecond transient absorption spectroscopy in the visible spectral range. The complex spectrally ...
  
  
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  The design and construction of an active-target detector for the study of the 20Ne(α,α’)20Ne* reaction 

  Brummer, Johann Wiggert (Stellenbosch : Stellenbosch University, 2015-12)
  
  
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  Structural dynamics in DCNQI salts and transition metal dichalcogenides studied by electron diffraction simulation 

  Olaoye, Olufemi Opeyemi (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: An in-depth understanding of the working principles of and phenomena governing strongly correlated condensed matter materials has paved way for technological advancement in electronics in the recent ...
  
  
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  Relativistic quantum mechanics on non-commutative spaces 

  Williams, Paul Henry (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: A brief review of non-relativistic and relativistic quantum mechanics is carried out, with particular attention to concepts that are modified in the noncommutative setting. The Hilbert-Schmidt operator ...
  
  
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  Biofilament interacting with molecular motors 

  Meylahn, Janusz Martin (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: We study molecular motors moving along a filament or polymer using two different mathematical models in which motors are idealised as springs. In the first model we study the average and the fluctuations ...
  
  
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  Characterization of the pre-eminent 4-α cluster state candidate in 16O 

  Li, Kevin Ching Wei (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: Please see full text for abstract
  
  
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  Collective coordinate description of kink-antikink interaction 

  Takyi, Ishmael (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: In this thesis we explore resonance solutions in one space and one time dimensions in the nonlinear non-integrable ø⁴ and ø⁶ models. These resonances occur when the relative velocity between the kink ...
  
  
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  One-dimensional fluid model with oscillating, exponentially decaying pair interactions 

  Maziya, Gcina (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: For a one-dimensional fluid model where the pair interaction potential between the molecules consists of a hard core and an exponential attraction, Kac has shown that the partition function can be ...
  
  
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  Generalized time-frequency representations and their application to quantum control 

  Smit, Andre Marius (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: We present here a new generalized Time-Frequency-Represenation (TFR) for use in describing ultra-fast laser pulses. The TFR is developed in terms of Fourier- Hermite-Gauss (FHG) polynomials on a von ...
  
  
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  Aspects of femtosecond pulse shape transfer via difference frequency mixing 

  Botha, Gerda Nicolene (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: We investigate the generation of shaped femtosecond pulses in the infrared spectral regime via a nonlinear process called di erence frequency mixing. First we develop a detailed model of the process, ...
  
  
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  Dynamics of long-range interacting quantum spin systems 

  Van den Worm, Mauritz (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: In this thesis we study the time evolution of correlation functions in quantum lattice models in the presence of long-range interactions or hopping decaying asymptotically as a power law. For a large ...
  
  
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  Constructing dualities from quantum state manifolds 

  Van Zyl, Hendrik Jacobus Rust (Stellenbosch : Stellenbosch University, 2015-12)

  ENGLISH ABSTRACT: A constructive procedure to build gravitational duals from quantum mechanical models is developed with the aim of studying aspects of the gauge/gravity duality. The construction is simplified as far as ...
  
  
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  An investigation of a possible effect of reactor antineutrinos on the decay rate of 22Na 

  Van Rooy, Milton William (Stellenbosch : Stellenbosch University, 2015-04)

  ENGLISH ABSTRACT: Reported claims of a solar neutrino influence on radioactive β - -decay rates prompted a series of three long term measurements that were carried out at the Koeberg nuclear power plant North of Cape ...
  
  
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  High brightness lasers 

  Naidoo, Darryl (Stellenbosch : Stellenbosch University, 2015-04)
  
  
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  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 ...
  
  
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  Skyrme model description of heavy baryons with strangeness 

  Blanckenberg, Jacobus Petrus (Stellenbosch : Stellenbosch University, 2015-04)

  ENGLISH ABSTRACT: Please refer to full text for abstract.
  
  
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  Construction and characterization of a multi-antenna terahertz time-domain spectroscopy setup 

  Smith, Shane Raymond (Stellenbosch : Stellenbosch University, 2015-04)

  ENGLISH ABSTRACT: Recent progress in laser and semiconductor technology has allowed for far easier generation and measuring of coherent terahertz radiation, a previously difficult region in the radiation spectrum to ...
  
  
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  Time domain ptychography 

  Spangenberg, Dirk-Mathys (Stellenbosch : Stellenbosch University, 2015-04)

  ENGLISH ABSTRACT: In this work we investigate a new method to measure the electric field of ultrafast laser pulses by extending a known measurement technique, ptychography, in the spatial domain to the time domain which ...
  
  
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  Investigation of the 2+ Hoyle state candidates in 12C 

  Nemulodi, Fhumulani (Stellenbosch : Stellenbosch University, 2015-04)

  ENGLISH ABSTRACT: Please refer to full text.
  
  
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  Relativistic distorted wave analysis of neutrino-induced strange particle production on nuclei 

  Adera, Gashaw Bekele (Stellenbosch : Stellenbosch University, 2014-12)

  ENGLISH ABSTRACT: See fulltext for abstract.
  
  
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  Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS) 

  Hissen, Huzifa Zain Alabdeen Abdarahman (Stellenbosch : Stellenbosch University, 2014-12)

  ENGLISH ABSTRACT: Terahertz (THz) radiation is often used in many promising applications such as information and communication technology and airport security. Optimized and adapted terahertz fields hold huge promise for ...
  
  

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