Browsing Department of Physics and Astronomy by Title
Now showing items 155-174 of 240
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Physics graduate preparedness for work and society
(University of the Western Cape, 2023)Both internationally and in South Africa, there have been renewed debates about the purposes of higher education and the attributes that should be developed in graduates. In the field of physics, many studies have reported ... -
Plasma characterisation of an electron cyclotron resonance ion source by means of x-ray spectroscopy
(University of the Western Cape, 2012)The ultimate aim of any multiply-charged ion source, like the Electron Cyclotron Resonance Ion Source, ECRIS, is the production of multiply-charged ions, in sufficiently large quantities. These multiplycharged ions, in the ... -
Point source simulations and Foreground cleaning techniques for HI intensity mapping
(University of the Western Cape, 2018)We created a full sky point source catalogue at frequencies around 1 GHz, including the intensity, polarisation, rotation measure and spectral index of the point source. These values were matched to data where available ... -
Polarizability effects due to low-energy enhancement of the gamma-strength function
(University of the Western Cape, 2018)Physics is the study of natural phenomena. Nuclear physicists have since the discovery of the nucleus been working on understanding its dynamics. The nuclear chart, analogous to the periodic table of elements, is illustrated ... -
Post-deposition doping of silicon nanowires
(University of the Western Cape, 2018)Silicon nanowires (Si NWs) continue to demonstrate superior properties to their bulk counterparts, with respect to their morphological and electrical transport properties for the use in photovoltaic (PV) applications. ... -
Pre-equilibrium cross section calculations with a realistic effective nucleon-nucleon interaction
(University of the Western Cape, 1995)The principle aim of this work is to improve the way in which pre-equilibrium double differential cross-sections are currently calculated [1, 2, 3, 4]. The theoretical basis for these calculations is the Multistep Direct ... -
Probing galaxy evolution below the noise threshold with radio observations
(University of the Western Cape, 2020)The faint radio population consisting of star forming galaxies (SFG) and radio-quiet active galactic nuclei (AGN) is important in the study of galaxy evolution. However, the bulk of the faint population is below the ... -
Probing large-scale structure with the SKAO and other cosmological surveys
(University of the Western Cape, 2022)In recent history there have been several advances in cosmology, which has significantly shaped our understanding of the Universe. The current leading theory is called ΛCDM, which can successfully model the expansion of ... -
Probing the expansion history of the universe using upernovae and Baryon Acoustic Oscillations
(University of the Western Cape, 2016)The standard model of cosmology (the ɅCDM model) has been very successful and is compatible with all observational data up to now. However, it remains an important task to develop and apply null tests of this model. These ... -
Probing the large-scale structure of the universe with correlation functions
(University of the Western Cape, 2014)In this project we explore a new statistical package called KSTAT that computes the 2PCF and higher order correlation functions, such as the 3PCF, on BOSS, making use of high performance computing facilities to improve ... -
Probing the primordial Universe using the SKA in combination with other cosmological surveys
(University of the Western Cape, 2019)Next-generation surveys of the large-scale structure of the Universe will be of great importance in allowing us to extract invaluable information about the nature of the Universe and the physical laws that govern it, at ... -
Production and evaluation of capacitive deionization electrodes earmarked for the removal of ions from winery wastewater
(University of the Western Cape, 2023)Membrane capacitive deionization (MCDI) is a desalination technology considered to be cost effective specifically for salt bearing solutions with concentrations below 2000 mg‧L-1, which includes general winery wastewater. ... -
Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV
(University of the Western Cape, 2008)The objective of this project is to study the production of Li, Be and B isotopes emitted in the interaction of 12C with 12C at incident energies of 200 and 400 MeV.The energies of these produced fragments were measured ... -
Proton conductivity stability studies by modelling
(University of the Western Cape, 2016)In this thesis, some of the challenges experienced by high temperature polymer electrolyte membrane fuel cells are explored through material modelling techniques. A very important aspect for a fuel cell is that it should ... -
Radio-optical analysis of extended radio sources in the first look survey field
(2010)I combine 610 MHz Giant Metrewave Radio Telescope (GMRT) data, 1.4 GHz Very Large Array (VLA) data and 1.4 GHz Westerbork Synthesis Radio Telescope (WSRT) observations, encompassing a ∼ 4 square degree field (sq. deg. ... -
Radiometric characterisation of vineyard soils, Western Cape, South Africa
(University of the Western Cape, 2010)This study is aimed at investigating the feasibility of using the radiometric technique as an alternative to traditional methods for determining soil physico-chemical parameters which are important for terroir characterization. ... -
Radiometric investigation of soil and beach sand in Zanzibar
(University of the Western Cape, 2020)This study presents the results of radiometric investigation of soil and beach sand in Zanzibar. The activity concentration of natural radionuclides (40K, and 232Th and 238U decay products) in beach sand and soil samples ... -
Radiometric study of soil: the systematic effects
(University of the Western Cape, 2007)The natural 238U, 232Th and 40K radioactive content of vineyard soil was measured with an in-situ gamma-ray detector. The activity concentrations measured with the in-situ detector are normalized using the laboratory-determined ... -
Radon escape from water
(University of the Western Cape, 2010)This thesis aims to measure the rate of radon loss from water in a systematic way. The dependence on surface area, temperature and concentration will be investigated. The experiments were done at UWC by creating radon using ... -
Radon exhalation of building materials
(University of the Western Cape, 2018)Public concern about all radiation and radon exhalation from building materials has been highlighted recently. The purpose of this study is to address this public concern and to investigate the contribution of building ...