Mr
Isaac kwembur
(Nelson Mandela University)
Track F - Applied Physics
Poster Presentation
Potential Induced Degradation (PID) causes a significant decrease in a module’s performance and durability over its lifetime of 20-25 years. PID occurs when a potential difference between the cells and the aluminium frame cause ions to flow to the surface of the cell resulting in a leakage current. In large solar PV power plant several modules are connected in series to give desired output of...
Mr
Dlamini Mpilo
(National Metrology Institute of South Africa)
Track F - Applied Physics
Poster Presentation
This article reviews several milli- and micro-flow calibration standards available for calibration of low liquid flow instruments, such as medical devices. Their designs and measurement principles are discussed together with supported flow rates and measurement uncertainties. It was learnt that several European national metrology institutes (NMI’s) already offer calibration and traceability...
Dr
Muneer Sakildien
(iThemba LABS)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The Separated Sector Cyclotron, which is the heart of the iThemba LABS facility, has now been in operation for more than three decades. Over the years numerous improvements have been made to the existing facility. These include the installation of two novel flat-topping systems, simultaneous target irradiations with the installation of a beam splitter system as well as new and additional...
Ms
Sinegugu Happiness Mthembu
(iThemba LABS)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Gamma-gamma angular correlation measurements are an important tool to determine (i) the spin and parity of a nuclear state (ii) the multipolarity and the multipole mixing ratio of a gamma-ray transition. A segmented clover detector was placed at close geometry and tested it for angular correlation measurements using $^{133}$Ba and $^{60}$Co sources. The segments of the clover were used as...
Mr
Ndumiso Mnikathi
(student)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
iThemba LABS provides accelerator and ancillary facilities for research and training in physical, biomedical and material sciences. At the heart of the iThemba LABS accelerator complex is the variable-energy, separated-sector cyclotron. A solid-pole injector cyclotron SPC2 is used for pre-acceleration of light and heavy ions which has overall transmission of approximately 10%. In order to...
Dr
fhumulani nemulodi
(iThemba LABS)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
There is an increasing interest in high energy heavy ions beams for the study of heavy ion collision physics. The effective acceleration of heavy ions requires high charge states of elements which can in principle be produced in the electron cyclotron resonance (ECR) ion sources at iThemba LABS. However, the intensity of high charge state beams extracted from the source is limited and their...
Mr
Mmatselagale Hlakola
(Marcus)
Track F - Applied Physics
Poster Presentation
This study focuses on the recent examination of the effects of varying environmental conditions and power loading on precision 1 Ω standard resistors. The effects of temperature, relative humidity, atmospheric pressure and power loading on 1 Ω wire-wound resistance standards are described and characterized. The resistance standards are Leeds and Northrup resistors which are based on Manganin...
Mr
Phuti Ntsoko Rapheeha
(University of the Witwatersrand)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
The discovery of the Higgs boson in 2012 reaffirmed by the Large Hadron Collider (LHC) the Standard Model (SM), detailed measurements its couplings shows a strong deviation in the production of multiple leptons at the Electroweak (EW) scale from the Standard Model (SM) Monte Carlo predictions. The elevated production of lepton could potentially provide direct evidence for new physics Beyond...
Mr
Julian Nwodo
(University of Fort Hare)
Track F - Applied Physics
Poster Presentation
Presented in this paper is the determination of photovoltaic (PV) module parameters for various PV technologies and their response at different operating conditions. A xenon arc lamp solar simulator characterized at the Fort Hare Institute of Technology (FHIT) was used to simulate the desired irradiance setpoints. The solar simulator was characterized in terms of its spectral match, spatial...
Mr
Meehleketo Advice Mayimele
(university of Pretoria)
Track F - Applied Physics
Poster Presentation
Electron and hole transport layers of polymer solar cells have been modified by adding Cu nanoparticles and natural dyes. Hall measurements were used to study the conductivity of different layers on ITO. The results shows improvement conductivity of the hole transport layer, giving a value closer to that of other well known polymers for applications in solar cell.
Ms
Danielle Sabatta
(University of the Witwatersrand)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
The muon anomalous magnetic moment (muon g-2) represents one of the long-standing unsolved problems in particle physics. The current value of the discrepancy between the experimental and theoretical values is between three and four standard deviations. The large discrepancy could indicate the existence of new physics. A number of studies have shown that a 2-Higgs-Doublet Model (2HDM) along...
Dr
Ochuko Kelvin Overen
(Fort Hare Institute of Technology)
Track F - Applied Physics
Poster Presentation
The commercial sector represents the third highest energy consumers in South Africa with electric lighting constituting one of the major energy usages in the sector. Considering the significant amount of solar radiation in South Africa, office buildings can utilise daylighting solely for daily tasks without compromising occupant visual comfort; thus, reducing the overall energy consumption in...
Mr
Edward Emenike Chikwelu
(University of KwaZulu-Natal)
Track F - Applied Physics
Poster Presentation
A resistivity survey was carried out to study the level of groundwater pollution in the dumpsite at Awka Urban Anambra State. Depth, thickness, resistivity, and sediment at which contamination of groundwater occurred were also established. From the analysis, the dump site has four layers, contaminated topsoil, subsoil, rock fragment, and bedrock while the control side has four layers also...
Mr
Tshifhiwa Steven Ranwaha
(University of Venda)
Track F - Applied Physics
Poster Presentation
The dye sensitized solar cells have attracted more attention due to their low cost, transparency and flexibility. These types of solar cells use the dye molecule adsorbed on TiO2 semiconductor in nano architectural form with the role of absorbing photo catalytic properties only in the ultraviolet region of solar spectrum. TiO2 absorbs light in the ultraviolet spectrum but can be...
Mr
NDITSHENI NEKHWEVHA
(student)
Track F - Applied Physics
Poster Presentation
SnO2 semiconductor cannot proficiently produce UV light because of the large band gap which has ruined its potential optoelectronic application. Doping tin dioxide with different metals components has been considered as a promising method to reduce the band gap of SnO2 so it can improve light effectively in the visible and close infrared region. The electronic and optical properties of undoped...
Mr
Abbey Maheso
(Stellenbosch University)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Radon 222Rn is a natural radioactive gas directly produced from the decay of Radium, 226Ra found in rocks and soil. Since radon is a gas, it can move freely through the soil allowing it to escape into the atmosphere or flow into buildings. South Africa is facing the challenge in mine dumps which contribute radon exposure to the public. The World Health Organization (WHO) and the International...
Ms
LEBOGANG PHEFO
(UNIVERSITY OF ZULULAND)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Radon and radon decay products have been known to cause lung cancer in
humans, and hence a national survey to measure radon levels in houses in
South Africa is underway. This study is a preliminary to the national survey to be conducted and it aims to determine the radon emanation coefficient for soil samples. The radon emanation coefficient is important for predicting the radon levels in...
Prof.
Manny Mathuthu
(North West University- Mafikeng)
, Ms
Naomi D Mokhine
(North-West University Mafikeng)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Illicit trafficking of nuclear material has led to the International Atomic Energy Agency (IAEA), to require that all her Member States should develop nuclear forensics signatures for their Countries. These fingerprints are used to trace the origin and intent of the interdicted nuclear material.
At the Center for Applied Radiation Science and Technology, we used an NexION 2000, ICP-MS to...
Mr
Rory Pentz
(Cape Peninsula University of Technology)
Track F - Applied Physics
Poster Presentation
Quantum communications and computing rely heavily on the use of single photons. Thus there is a need for generating single photons and detecting single photons. In this research we focus on the detection of single photons. We employ avalanche photo detectors (APD) for this purpose. APDs are basically special electrical diodes that are operated in reverse bias beyond the breakdown voltage in...
Dr
Kittessa Roro
(NLC-CSIR)
, Dr
Nicolas Thantsha
(Tshwane University of Technology)
Track F - Applied Physics
Poster Presentation
In the recent past, the perovskite materials have shown remarkable performance as one of the most promising materials for photovoltaic applications. This is mainly due to the material’s excellent light absorption and suitable carrier diffusion lengths, resulting in high device efficiencies with significant opportunities to realize low-cost technology. This study aims investigate the...
Dr
Itani Given Madiba
(iThemba Laboratory for Accelerator Based Sciences)
Track B - Nuclear, Particle and Radiation Physics
Vanadium dioxide (VO2) is explored as an active smart radiation device (SRD) for new type of thermal control material for space craft especially in small satellites such as CubeSats. Current space thermal control systems require heaters with an additional power penalty to maintain moderate spacecraft’s temperatures during extreme temperatures. Because its emissivity can be changed...
Mr
Monphias Vumbugwa
(Nelson Mandela University)
Track F - Applied Physics
Poster Presentation
Soiling is the building up of contaminants on the sun facing surface of photovoltaic (PV) modules. These contaminants include dirt, dust, snow, bird droppings and other forms of particulate matter. Uneven soiling causes non-uniform illumination on solar cells which results in unequal current generation in substrings of multi-crystalline Silicon (mc-Si) PV modules. The current mismatch results...
Mr
Gilbert Osayemwenre
(Fort Hare University)
Track F - Applied Physics
Poster Presentation
The electrical and mechanical degradation analysis of degraded single junction amorphous silicon solar modules have been studied. This study was motivated by his quest to understand the fundamental principles behind the degradation and the low stability that is usually experienced by amorphous silicon solar (a-Si:H) modules. The electrical performance parameters of a-Si:H modules were...
Mr
Thabiso Nkwashu
(University of South Africa)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The study of the passage of energetic ions in matter is of interest for our understanding of basic ion-matter interactions and for applications in ion beam based technologies such as Ion Beam Materials Analysis, Ion Implantation, Radiation Detection and Measurement, and so on. The provision of experimental stopping force data is crucial for the continual validation of predictive theoretical...
Dr
Nnditshedzeni Eric Maluta
(University of Venda)
Track F - Applied Physics
Poster Presentation
Quantification of reference evapotranspiration (ETO) for a particular area is necessary in many applications in agriculture like, crop production, water resources, scheduling of irrigation, environmental assessment, etc. Estimation of evapotranspiration is one of the major hydrological components for determining the water budget, and components for determining the water flow analysis. The...
Mr
Adrian Wyngaard
(Cape Peninsula University of Technology)
Track F - Applied Physics
Poster Presentation
Nonlinear interactions between lasers and cold atoms are of particular interest these days, as they are used to create entangled photons and control the optical properties of materials. We study two nonlinear aspects, viz. electromagnetically induced transparency (EIT) and four-wave mixing (FWM), using laser cooled rubidium. We are currently investigating entangled photon generation via FWM...
Mr
Charl Smalberger
(University of the Witwatersrand)
Track F - Applied Physics
Poster Presentation
Ultrasonic technology is available, affordable and non-invasive. We use ultrasound to manipulate biological cells and micromaterials. The ultimate purpose of ultrasonic cell manipulation is the separation and eradication of unwanted cells.
This study presents an experimental setup designed for ultrasonic cell manipulation.
A perspex water-filled container is placed on the microscope...
Ms
Boitumelo Tlhaole
(Molecular Sciences Institute, School of Chemistry, Faculty of Science, University of the Witwatersrand, Johannesburg, Private Bag 1, 2050, South Africa)
Track F - Applied Physics
Poster Presentation
The harmful and life-threatening properties of methane (CH4) and carbon monoxide (CO) gases at low temperatures has led to extensive research for suitable detection. Semiconducting metal oxides (SMOs) have been thoroughly studied in sensing due to their favourable characteristics, for instance, their low cost, long lifetime, fast response time and high sensitivity [1]. Nonetheless, the...
109.
Fake lepton background estimation in $H \to Sh \to e^{\pm}\mu^{\mp} + $jets with ATLAS detector
Mr
Lehumo Mashishi
(University of Witwatersrand)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
The estimation of fake lepton background is presented for the physics beyond the Standard Model search in the final state with a pair of different flavor opposite-sign leptons, $e\mu$, accompanied by at least two jets. The search uses the LHC full run-2 data recorded at center-of-mass-energy 13~TeV recorded with the ATLAS detector, with the corresponding luminosity of 139 fb$^{-1}$. The search...
Mr
Tebogo Maake
(Tshwane University of Technology and City of Tshwane EMS)
Track F - Applied Physics
Poster Presentation
The effect of fire or heat and the associated fire hazards of South African hardwoods had been minimally researched. Full combustion is normally accompanied by ‘high’ temperatures, ‘fast’ fire/flame spreads with associated ‘high’ heat release rates as well as smoke and toxic gases. Quantitative investigations on these fire performances of selected and common South African hardwood species that...
Mr
Witness Chirume
(National University of Science and Technology)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
ABSTRACT
ChemSep software was used to simulate and design a distillation column prototype for separating a binary mixture of water and methanol. The behaviour of the distillation column was modelled using MESH equations, which in this work have been solved through ChemSep in order to study the effect of different parameters. The desired methanol recovery was 97%, and in the simulation this...
Ms
Ayabulela Tsewu
(University of the Witwatersrand)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
Radioactivity has existed since the beginning of time and is part of our planet Earth. Several studies
have been well documented to monitor natural radioactivity as a source of radiation exposure to
the environment and to human beings. In order to determine the effects of natural radioactivity
in around areas of former uranium mines in the West-Rand area, an investigation of...
Prof.
Simon Connell
(University of Johannesburg)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The accurate modeling of nuclear reactors is essential for design, regulation, safety analysis, operations and forensic analysis. There are two classes of approaches to modeling the neutronics of nuclear reactors. The first is deterministic, where the neutron transport equations are solved using a combination of approximations and numerical methods based on a space-time discretization. This...
Ms
Marie Louise Umuhire
(University of Kwazulu Natal, School of Chemistry and Physics, Westville Campus, Durban, South Africa)
Track F - Applied Physics
Poster Presentation
Quantum communication is a means of encoding information in the form of single photons and share that information amongst authorised parties regardless of the presence of an adversary [1, 2]. For free-space communication, the communication is not only threatened by the eavesdropper but also by the atmospheric turbulence since it does have an impact on the information passing through it....
Mr
Bonginkosi Zikhali
(University of wersten cape physics)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Internal Conversion (IC) is an important component of most nuclear decay schemes, in
order to balance a decay scheme correctly, one need to know IC contribution to each
transition [1]. The knowledge of the IC processes is of importance for the evaluation of
absolute and relative radiation strengths. Furthermore the study of correlations involving IC
offered the possibility to determine the...
Mr
Nemangwele Fhulufhelo
(University of Venda)
Track F - Applied Physics
Poster Presentation
Knowledge of cave ventilation processes is required to quantify the effect variations in CO2 concentrations which have on speleothem deposition rates and thus paleoclimate records. In this study we use radon-222 (222Rn) as a proxy of ventilation to estimate CO2 outgassing from the cave to the atmosphere, which can be used to infer relative speleothem deposition rates. We have measured radon...
Mr
Witness Chirume
(National University of Science and Technology(NUST))
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
Gamma column scanning technique was used to scan and investigate the integrity of the 26m tall benzole prefractionator column consisting of 60 single pass trays and a diameter of 0.8m. A 100mCi Cobalt 60 gamma radiation source and NaI scintillation detector was used to scan the distillation column. The obtained results were presented in a graphical form of column elevation against intensity....
6.
L-SHELL X-RAY PRODUCTION CROSS SECTIONS IN 39Y, 64GD AND 83BI INDUCED BY 0.1-2.0 MEV/U HEAVY IONS
Mr
Ernest Ejeh
(University of Pretoria)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
The availability of accurate and reliable heavy ion-matter interaction database is very crucial for the utilization of different heavy ion beam analytical techniques such as heavy Particle Induced X-ray Emission, heavy ion Elastic Recoil Detection Analysis (ERDA), etc. It is, therefore, expedient to expand the existing global database of basic ion-atom interaction phenomena by adding new...
Mr
Thendo Emmanuel Nemakhavhani
(University of Johannesburg)
Track F - Applied Physics
Poster Presentation
Radiation damage is of great interest in diamond. Diamond is so-called radiation hard and is a candidate for passive and active electronics in high radiation environments. Further, it is possible to treat diamond by radiation and annealing stages, so as to change its color or introduce a favoured colour. The studies of radiation damage is therefore well advanced in diamond. More recently, so...
Ms
Charmane Khumalo
(iThemba LABS)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
Magnetic spectrometers have proven to be very useful in the world of experimental nuclear and astrophysics. The focal plane detection system instrumenting these spectrometers is instrumental in their success. A new focal plane detection system is envisaged for the K600 QDD magnetic spectrometer at iThemba LABS in Cape Town, South Africa. The existing focal plane detection system, consisting of...
Mr
Magadla Sive
(Center for HRTEM, Department of Physics, Nelson Mandela University. South Africa)
Track F - Applied Physics
Poster Presentation
Ti-Cu alloys are promising alloys for biomedical application in dentistry. Previously, metal ions (Ag+ and
Zn+) have been widely used as antibacterial agents, however these ions have been found to be toxic to
the human body [1]. Copper has been preferred as a good antibacterial agent due to its low toxicity and
high cytocompatibility. The current study is aimed at producing biocompatible...
Ms
Boitumelo Tlhaole
(Molecular Sciences Institute, School of Chemistry, Faculty of Science, University of the Witwatersrand, Johannesburg, Private Bag 1, 2050, South Africa)
Track F - Applied Physics
Poster Presentation
The harmful and life-threatening properties of methane (CH4) and carbon monoxide (CO) gases at low temperatures has led to extensive research for suitable detection. Semiconducting metal oxides (SMOs) have been thoroughly studied in sensing due to their favourable characteristics, for instance, their low cost, long lifetime, fast response time and high sensitivity [1]. Nonetheless, the...
Mr
Russel Mhundwa
(University of Fort Hare Institute of Technology)
Track F - Applied Physics
Poster Presentation
High energy cost in a dairy farm is of concern and in order to make the business viable serious energy efficient measures need to be taken into account. Mostly, in dairy farms, energy consumption is high during the cooling process of milk before it can be collected for processing. This study was conducted on an existing dairy farm and it presents the optimization of the cooling process of milk...
Mr
Otsile Tikologo
(Botswana International University of Science and Technology)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The Botswana International University of Science and Technology is looking at the possibility of commissioning an electron beam accelerator facility for research and industrial applications. Botswana has a particular interest to sterilize meat for export as the meat industry plays an important role in Botswana’s economy and represents the country’s third main income earner. Additional...
Mr
Sithole Makuhane
(University Of the Western Cape & iThemba LABS)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The K = 2+ bands in the even-even Os isotopes lie at lower excitation energy than in any other nuclei in the Nuclear Chart. This makes them very interesting. In the odd isotopes the extra single neutron can couple to these K = 2+ structures giving information on the axial asymmetry in the shape of the core nucleus. In 187Os there are two long lived isomers at...
Dr
Milton van Rooy
(NMISA)
Track F - Applied Physics
Poster Presentation
The National Metrology Institute of South Africa (NMISA) Radioactivity Standards laboratory maintains the standard for radioactivity in South Africa. The nuclear industry requires dissemination of high accuracy, low uncertainty calibration standards. Where the quality of life of the public is of concern, the accuracy of various instruments used to measure radioactivity is extremely important....
Ms
Awelani Polite Makhuvha
(University of venda)
Track F - Applied Physics
Poster Presentation
Access to clean energy is essential to promote green economic growth, reduces climate change, increase green employment opportunities, support the provision of social services, and generally promote human development. Solar energy is one of important renewable energy source to supply major part of world’s energy demand and can reduce the use of the fossil fuels. The knowledge of solar...
Prof.
Antoine F. Mulaba - Bafubiandi
(University of Johannesburg)
Track F - Applied Physics
Poster Presentation
The garification process is a food preparation method which depends on process factors such as cassava age, fermentation days and temperatures. These process parameters affect the yield and quality of the gari especially during roasting (garification). This paper report on findings from a study where the convective heat transfer coefficients during garification process were examined. The...
Dr
Mmantsae Diale
(University of Pretoria)
Track F - Applied Physics
Poster Presentation
Organic solar cells based on ZnO nanorods have been fabricated using inverted architecture and reported an efficiency of 4.6 %. Adding Cu nanoparticles and SQ dyes to both electron and hole transport layers further improved the conductivity of the solar cell. The structure of the solar cell used employed ITO substrate with PCBM, P3HT and PEDOT:PSS as polymers. The results shows that the device...
Ms
Lineo Mxakaza
(University of the Witwatersrand)
Track F - Applied Physics
Poster Presentation
Cu2ZnSnS4(CZTS) is a quarternary chalcogenide composed of earth abundant and low toxicity elements. It has been reported to exhibit excellent catalytic activity, thus can be employed in dye sensitized solar cell (DSSC) counter electrodes for reduction of electrolytes to replace platinum. However, Cu2ZnSnS4 has low surface area and poor electron conductivity, which can be counter-acted by...
Dr
Caston Sigauke
(University of Venda)
Track F - Applied Physics
Poster Presentation
Probabilistic forecasting of medium-term global solar irradiance (GSI) using data from Tellerie radiometric station in South Africa for the period August 2009to April 2010 is discussed in this paper. Variables are selected using a least absolute shrinkage and selection operator (Lasso) via hierarchical interactions and the parameters of the developed models are estimated using the Barrodale...
Dr
Joele Mira
(iThemba LABS)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The demand of scientists for high energy metal ion beams for nuclear experiments has motivated iThemba LABS in collaboration with FLNR, JINR to study their production with using Electron Cyclotron Resonance Ion Sources (ECRIS). The most common method is to heat the metal in an electrical oven inside the source to high temperatures to produce sufficient partial pressure for operation. The...
Ms
Nthabiseng Mohlala
(University of Witwatersrand)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Radioactivity from several naturally occurring and anthropogenic sources is present throughout the environment and trace levels of radioactivity are normally found in all types of drinking water. The activity concentration and composition of these radioactive constituents vary from place to place, depending principally on the radiochemical composition of the soil and rock strata through which...
Mr
Mashinga Johannes Mvelase
(SACNASP)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
The radiological hazards were evaluated in the agricultural fields of Weenen, province of KwaZulu-Natal, South Africa. In this study, gamma spectroscopy was used to measure the activity concentrations of these radionuclides in four representative soil samples from the fields and two representative soil samples from the control area. The average activity concentrations in Bq.kg-1 for 238U,...
Mr
Linda Mdletshe
(University of Zululand)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Various interpretations of the K = 2+ structures in the Os nuclei have been a subject of great interest in the nuclear physics community [1-3]. The nature of these structures is not fully understood. These structures could be interpreted as time-dependent gamma-vibration of a nuclear shape or as due to axial asymmetry of the nuclear shape. The current work seeks to give more insight...
Dr
Bahati Mukeru
(University of South Africa)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
We present a theoretical study of total, complete and incomplete fusion. Using the different fusion definitions and considering the angular distributions total fusion cross section, it is shown that there is a lower angular momentum L, such that below this value, the total fusion is independent of the projectile binding energy. We show that this region represents the complete fusion.
Mr
Ross Dix-Peek
(NMMU)
Track F - Applied Physics
Poster Presentation
In operation, photovoltaic (PV) modules can experience inhomogeneous shading. This can result in the reverse biasing of individual PV cells. This often results in local degradation of the device material as well as the encapsulant. This affects the performance of the entire module and therefore, the string of modules connected in series within a system. In this study, temperature-and-bias...
Mr
KANTING MOTIMELE
(UNIVERSITY OF VENDA)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
In this project we study exclusive proton-proton scattering reactions from unstable nuclei at intermediate energies (100 - 500 MeV) using relativistic formalism. The original relativistic impulse approximation (A1) and generalized relativistic impulse approximation (A2) formalisms are used to calculate the optical potentials, with target densities derived from relativistic mean field theory...
Mr
Thabo Lepota
(University of the Witwatersrand)
Track F - Applied Physics
Poster Presentation
The initial architecture of the Large Hadron Collider (LHC) was so that it can deliver proton-proton collisions at a centre-of-mass energy of 14\,TeV and with instantaneous luminosity of \(1\times10^{34} cm^{-2}s^{-1}\). The Phase II upgrade of the LHC will increase the luminosity by at least 5 times. The present electronics in the detector is not equipped to handle the expected radiation from...
Ms
Nthabiseng Lekalakala
(University of Witwatersrand)
Track F - Applied Physics
Poster Presentation
During the maintenance period of the Front-End electronics of the Tile Calorimeter of the ATLAS detector, one has to quickly assess their state, first by confirming existing problems, and secondly by assessing the validity of the repairs. The Diagnostics and Verification System (DVS) tests are composed of checks that are used to verify the functionality of the Tile front-end (FE) electronics...
Mr
FEILIX MASOK
(Plateau State University Bokkos, Nigeria)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
Uranium-238 (238U) and thorium-232 (232Th) are the parent primordial nuclides who along with their progenies are sources of radiation exposure to which humans are exposed directly or indirectly. 238U decay to 206Pb after 14 different alpha or beta decays, while 232Th decay series terminate at 208Pb after 10 successive alpha or beta decays. In this study, gross alpha and beta activity...
Ms
Ntokozo Mahlangu
(University of Venda)
Track F - Applied Physics
Poster Presentation
Abstract
Novel methods of energy production (clean, inexpensive and abundant) are steadily replacing the conventional and out-dated methods (toxic, high-cost and rapidly depleting). Photovoltaics, in particular, show a relentless incline in the global contribution to electricity production. South Africa experiences large solar energy, the core of PV application, yet its contribution to PV...
Dr
Siziwe Zuma
(University of Fort Hare)
Track F - Applied Physics
Poster Presentation
The climatically conditions in Ethiopia are difficult, with a great gradation of sometime in between the year and three-dimensional unevenness in high temperature and precipitation. The ambiguity about meteorological conditions is growing with environment alteration (UK Government, 2016: 1). The country has an extended past of far-reaching food crisis prompted or aggravated by a...
Dr
Ismaila Idowu Ahmed
(University of Ilorin)
Track F - Applied Physics
Poster Presentation
Cow horns and hooves are abattoir wastes which have not been properly managed hitherto and their indiscriminate disposal amounts to environmental risk and pollution. However, in this work, thermochemical
characterization of animal horns has been carried out to investigate their potential for carbonitriding treatment of steel. Thermogravimetric analysis (TGA) was carried out to investigate...
Dr
Caspah Kamunda
(Rusangu University)
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Naturally Occurring Radionuclide Materials (NORMs) are a common occurrence in the environment, but anthropogenic activities such as mining have resulted in elevated levels of these contaminants in the environment. A radiological toxicity assessment of NORMs in water samples from a gold mining area in the Gauteng Province of South Africa was evaluated. In this study, 29 water samples were...
Mr
Christopher Davis
(University of Cape Town)
Track B - Nuclear, Particle and Radiation Physics
Poster Presentation
Missing transverse momentum is a difficult variable to reconstruct from 13 TeV proton-proton collisions. Regression based neural networks can be used to reconstruct missing transverse momentum , however, these neural networks display a bias: they have difficulty distinguishing between events with relatively small true missing transverse momentum over events with zero true missing transverse...
