Browsing by Author "Lindsay, R."
Now showing items 1-14 of 14
-
Calibration of germanium detectors for applications of radiometric methods in South Africa.
Maleka, P.P (University of the Western Cape, 2001)AII materials that are radioactive emit characteristic gamma-radiation. Natural radioactivity can be used in heavy minerals exploration and processing, as well as in understanding sediment transport. processes in coastal ... -
Characterisation of natural radioactivity in Karoo Basin groundwater prior to shale gas exploration
Botha, Ryno (University of the Western Cape, 2017)The prospect of unconventional shale-gas development in the Karoo Basin (South Africa) has created the need to obtain baseline data on natural radioactivity in Karoo groundwaters. The Karoo Basin groundwater radiological ... -
Determination of natural radioactivity concentrations in soil: a comparative study of Windows and Full Spectrum Analysis
Maphoto, Katse Piet (University of the Western Cape, 2004)In this study, two methods of analysing activity concentrations of natural radionuclides (U, Th and K) in soil are critically compared. These are the Window Analysis (WA) and Full Spectrum Analysis (FSA). In the usual WA ... -
Determination of the photopeak detection efficiency of a HPGe detector, for volume sources, via Monte Carlo simulations
Damon, Raphael Wesley (University of the Western Cape, 2005)The Environmental Radioactivity Laboratory (ERL) at iThemba LABS undertakes experimental work using a high purity germanium (HPGe) detector for laboratory measurements. In this study the Monte Carlo transport code, MCNPX, ... -
Development and study of a Thoron (Rn-220) standard source
Elhag, Elmughera Hussein Salim (University of Western Cape, 2019)Thoron Rn-220 is a radioactive gas with a half-life of 55.6 s. It has been identified as a possible health concern in specific places such as monazite processing plants and (rare-earth) mines. The short half-life of Rn-220 ... -
Exploration of several radiation-based analytical techniques to investigate chlorides and chlorides effects within concrete
Radebe, Mabuti Jacob (2007)In this study, the capabilities of Neutron Radiography (NRad) and -Tomography (NTomo), as well as X-ray Radiography (XRad) to investigate chlorides and chlorides corrosion effects within steel reinforced laboratory concrete ... -
Gamma spectroscopy and lifetime measurements in the doubly-odd 194tl nucleus, revealing possible chiral symmetry breaking
Masiteng, Paulus Lukisi (University of the Western Cape, 2013)In the first experiment high spin states in 194Tl, excited through the 181Ta (18O, 5n) heavyion fusion evaporation reaction were studied using the AFRODITE array at iThemba LABS. The γ-γ coincidences, RAD ratios and linear ... -
Gamma spectroscopy of the doubly– ODD 194Tl Nucleus
Ramashidzha, Tshifhiwa Marius (University of the Western Cape, 2006)The odd – odd Tl nuclei with A ≥ 190 have moderate oblate nuclear deformation and show rotational bands built on different quasiparticle excitations. Several phenomena, not yet fully understood, were observed in these ... -
In-situ measurements of radon concentrations in soil gas at a site on the Cape Flats
Manavhela, Ramudzuli Fijiant (University of the Western Cape, 2007)Measurements of radon (222Rn) concentration in soil gas are routinely used to locate geological fault zones. This study was undertaken to investigate the systematic effects that influence radon soil-gas measurements, in ... -
Modelling and measurement of radon diffusion through soil for application on mine tailings dam
Speelman, Wilcot John (University of the Western Cape, 2004)Radon has been identified as an important factor that could result in a health hazard by studies all around the world. The health risks can be minimised by preventive measures where radon is highly concentrated as in some ... -
Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV
Mira, Joele Paulus (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 ... -
Radiometric study of soil: the systematic effects
Joseph, Angelo Daniel (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 ... -
Signature splitting and inversion in the 186-194 Au Nuclei predicted by the total routhian surface (TRS) and cranked shell model (CSM) calculations
Shirinda, Obed (University of the Western Cape, 2007)The nearly oblate deformed Au nuclei show rotational bands built on multi quasiparticle excitations [Bou89, Bou92, Gue03, Gue01, Ven92]. Several of these bands are built on rotationally aligned high-j proton and neutron ... -
Studying chirality in a ~ 100, 130 and 190 mass regions
Shirinda, Obed (University of the Western Cape, 2011)Chirality is a nuclear symmetry which is suggested to occur in nuclei when the total angular momentum of the system has an aplanar orientation [Fra97, Fra01]. It can occur for nuclei with triaxial shape, which have valence ...