B. Maqabuka
A5056146502- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Astronomical and nuclear sciences
- Rare-earth and actinide compounds
- Nuclear reactor physics and engineering
- Advanced NMR Techniques and Applications
- Mass Spectrometry Techniques and Applications
- Gamma-ray bursts and supernovae
- Advanced Fiber Optic Sensors
- X-ray Spectroscopy and Fluorescence Analysis
- Quantum Chromodynamics and Particle Interactions
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Ion-surface interactions and analysis
- Graphite, nuclear technology, radiation studies
- Nuclear Materials and Properties
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Crystal Structures and Properties
- X-ray Diffraction in Crystallography
University of Johannesburg
2021-2024
iThemba Laboratory
2019-2022
National Research Foundation
2019-2022
University of the Western Cape
2018-2022
Abstract The $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math> -ray strength function ( SF) and nuclear level density (NLD) have been extracted for the first time from inverse kinematic reactions with Oslo method. This novel technique allows measurements of these properties across a wide range previously inaccessible nuclei. Proton– coincidence events $$\mathrm {d}(^{86}\mathrm {Kr}, \mathrm {p}\gamma )^{87}\mathrm {Kr}$$...
A comprehensive systematic study is made for the collective β and γ bands in even-even isotopes with neutron numbers N=88 to 92 proton Z=62(Sm) 70 (Yb). Data, including excitation energies, B(E0) B(E2) values, branching ratios from previously published experiments are collated new data presented first time this study. The experimental compared calculations using a five-dimensional Hamiltonian (5DCH) based on covariant density functional theory (CDFT). realistic potential quadrupole shape...
The spectroscopy of $^{71}\mathrm{Ge}$ has been investigated via the fusion-evaporation reaction $^{74}\mathrm{Ge}(\ensuremath{\alpha},\ensuremath{\alpha}3n)^{71}\mathrm{Ge}$. Collective structures including a rotational band built on $15/{2}^{\ensuremath{-}}$ octupole state in have established. observation strong $E1$ transitions and well-behaved sequence provide first experimental evidence an Ge isotopes, suggesting enhanced correlation around $N=40$ $A\ensuremath{\approx}70$ region. A...
High-spin states in $^{74}\mathrm{As}$ were studied using the $^{74}\mathrm{Ge}(^{4}\mathrm{He},1p3n)$ reaction at beam energies of 58.6 and 62.6 MeV. Two positive- one negative-parity bands have been identified $^{74}\mathrm{As}$. The two positive-parity are interpreted as chiral doublet bands, which is supported by triaxial particle rotor model. Three electric dipole transitions linking yrast also observed this work, suggesting existence octupole correlations
Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following $^{155}\mathrm{Gd}(\ensuremath{\alpha},2n)^{157}\mathrm{Dy}$ $^{148}\mathrm{Nd}(^{12}\mathrm{C},5n)^{155}\mathrm{Dy}$ reactions 25 65 MeV, respectively. We report high-$K$ bands, which are conjectured to be first candidates of a ${K}^{\ensuremath{\pi}}={2}^{+}\ensuremath{\gamma}$ vibrational band, built on $[505]11/{2}^{\ensuremath{-}}$ neutron orbital, in both...
Low-spin states of 157Dy have been studied using the JUROGAM II array, following 155Gd (α, 2n) reaction at a beam energy 25 MeV. The level scheme has expanded with four new bands. Rotational structures built on [523]5/2− and [402]3/2+ neutron orbitals constitute additions to as do many inter- intraband transitions. This manuscript also reports observation cross I+→(I–1)− I−→(I–1)+ E1 dipole transitions interlinking (band 5) 7) orbitals. These interlacing band are interpreted bands parity...
There is growing interest in using optical fibres for discrete and distributed measurement of nuclear reactor state parameters such as temperature, water level sensing, neutron flux, etc. online real-time. This study looks at fibre damage caused by a reactor's radiation field. After being exposed to mixed field from fission reactor, we measured the sensitivity three different options: naked, acrylate coated, ormocer coated fibres.Optical offer numerous advantages, including immunity...
High-spin states in 76As have been observed for the first time by using 4He+74Ge reaction at beam energies of 58.6 and 62.6 MeV. Two positive-parity three negative-parity bands found 76As. The two with πg9/2⊗νg9/2 configurations are tentatively interpreted as chiral doublet bands, which supported triaxial particle rotor model calculations. electric dipole transitions linking yrast positive- also this work, implying possible presence octupole correlations 76As.Received 29 July 2023Accepted 23...
Low- and medium-spin negative-parity bands of $^{187}\mathrm{Os}$ have been studied using the AFRican Omnipurpose Detector for Innovative Techniques Experiments (AFRODITE) array, following $^{186}\mathrm{W}(^{4}\mathrm{He},3n)^{187}\mathrm{Os}$ reaction at a beam energy 37 MeV. In current work, all previously known significantly extended three new added to level scheme. The angular distribution ratio (${R}_{\mathrm{AD}}$) polarization measurements used assign spin parity observed levels....
Background: The shape of most nuclei is described by its quadrupole deformation (showing the deviation from spherical shape) and triaxiality axial symmetry). Nuclei affected show additional collective rotational bands, called $\ensuremath{\gamma}$ that appear at low excitation energy. bands can be caused precession a nucleus with triaxial shape, but also arise small vibrations around an axially symmetric shape.Purpose: aim this work to search for new excitations in $^{187}\mathrm{Os}$...
A new method was developed to produce enriched Sulfur targets with minimum loss of material. This made possible by inserting in-between two 0.5 μm Mylar foils (C10H8O4). The initial aim ensure that the reduce no more than 50% thickness within 24 hours under equivalent 10 J/cm 2 integrated energy deposition an energetic (Eb > 50 MeV) proton beam. There is material while making target, as all deposited surface area be exposed During beam irradiation, were frequently swivelled in order...