Browsing Research Articles (Physics) by Title
Now showing items 120 of 113

Accurate Laboratory Wavelengths of the A1Π(υ' = 05)X1Σ+(υ'' = 0) Vibronic Bands of 12C17O and 12C18O
(IOP Science, 2006)Twenty nine rovibronic lines of 12C17O for which laboratory wavelengths were previously unavailable were detected in laserinduced fluorescence excitation spectra of the six vibronic bands A1Π(υ' = 05)X1Σ+(υ'' = 0). ... 
Accurate laboratory wavelengths of the e 3 Σ–(ν' = 5) – X 1 Σ+(ν'' = 0) band of 12C16O
(IOP Science, 2010)The forbidden singlettriplet transitions of carbon monoxide (CO) are important in the interpretation of vacuum ultraviolet interstellar absorption spectra and in particular for the measurement of large CO column densities. ... 
Accurate laboratory wavelengths of the vacuum ultraviolet A(v'=3)X(v''=0) band of 12C17O and 12C18O
(IOP Science, 2003)Six individual rotational lines (J'' ≤ 3) of 12C17O, as well as four of 12C18O, were detected in the A 1Π(v' = 3)X 1Σ+(v'' = 0) vibronic band, and their wavelengths determined using neighboring 12C16O and 13C16O lines as ... 
Anomalous scaling of dynamical large deviations
(American Physical Society, 2018)The typical values and fluctuations of timeintegrated observables of nonequilibrium processes driven in steady states are known to be characterized by large deviation functions, generalizing the entropy and free energy ... 
Attractive electromagnetic Casimir stress on a spherical dielectric shell
(Elsevier, 2013)Based on calculations involving an idealized boundary condition, it has long been assumed that the stress on a spherical conducting shell is repulsive. We use the more realistic case of a Drude dielectric to show that the ... 
Calculation of a complete set of spin observables for proton elastic scattering from stable and unstable nuclei
(American Physical Society, 2018)A microscopic study of proton elastic scattering from unstable nuclei at intermediate energies using a relativistic formalism is presented. We have employed both the original relativistic impulse approximation (IA1) and ... 
Characterization of the proposed 4−α cluster state candidate in ¹⁶O
(American Physical Society, 2017)The 0¹⁶O(α,α′) reaction was studied at θlab=0∘ at an incident energy of Elab=200 MeV using the K600 magnetic spectrometer at iThemba LABS. Proton decay and α decay from the natural parity states were observed in a ... 
Chiral bands in 193Tl
(Jagiellonian University, 201703)Since the introduction of chirality in nuclei, the search for chiral candidates in different mass regions has been a hot topic for about two decades. At iThemba LABS, a new chiral symmetry region, the thallium isotopes with ... 
Chiral geometry and rotational structure for ¹³⁰Cs in the projected shell model
(Elsevier, 2018)The projected shell model with configuration mixing for nuclear chirality is developed and applied to the observed rotational bands in the chiral nucleus 130Cs. For the chiral bands, the energy spectra and electromagnetic ... 
A class of spatiotemporal and causal stochastic processes, with application to multiscaling and multifractality
(Academy of Science for South Africa, 2005)We present a general class of spatiotemporal stochastic processes describing the causal evolution of a positivevalued field in space and time. The field construction is based on independently scattered random measures ... 
Classical and quantum filaments in the ground state of trapped dipolar Bose gases
(American Physical Society, 2017)We study, by quantum Monte Carlo simulations, the ground state of a harmonically confined dipolar Bose gas with aligned dipole moments and with the inclusion of a repulsive twobody potential of varying range. Two different ... 
Classical dynamics on threedimensional fuzzy space
(American Physical Society, 2018)We derive the path integral action for a particle moving in threedimensional fuzzy space. From this we extract the classical equations of motion. These equations have rather surprising and unconventional features: they ... 
Comparison of doublefolding effective interactions within the cluster model
(American Physical Society, 2018)Clustercore hybrid potentials with WoodsSaxon plus cubic terms have been constructed to account for both the decay properties and positiveparity groundstate bands in 212Po, 218Rn, 222Ra, and 228Th. The hybrid ... 
Consistency between SU(3) and SU(2) covariant baryon chiral perturbation theory for the nucleon mass
(Elsevier, 2017)Treating the strange quark mass as a heavy scale compared to the light quark mass, we perform a matching of the nucleon mass in the SU(3) sector to the twoflavor case in covariant baryon chiral perturbation theory. The ... 
The CT scanner facility at Stellenbosch University : an open access Xray computed tomography laboratory
(Elsevier, 201610)The Stellenbosch University CT Scanner Facility is an open access laboratory providing nondestructive Xray computed tomography (CT) and a high performance image analysis services as part of the Central Analytical Facilities ... 
Defectinduced supersolidity with softcore bosons
(Nature Publishing Group, 2014)More than 40 years ago, Andreev, Lifshitz and Chester suggested the possible existence of a peculiar solid phase of matter, the microscopic constituents of which can flow superfluidly without resistance due to the formation ... 
Deformation dependence of the isovector giant dipole resonance : the neodymium isotopic chain revisited
(Elsevier, 2018)Proton inelastic scattering experiments at energy Ep=200MeV and a spectrometer scattering angle of 0° were performed on 144,146,148,150Nd and 152Sm exciting the IsoVector Giant Dipole Resonance (IVGDR). Comparison with ... 
Diffusions conditioned on occupation measures
(AIP, 201602)A Markov process fluctuating away from its typical behavior can be represented in the longtime limit by another Markov process, called the effective or driven process, having the same stationary states as the original ... 
Distortedwave Born approximation study of the 11Li(p,t) 9Li reaction
(IOP Publishing, 2016)The reaction 11Li(p,t) 9Li(gs) at an incident energy of 4 MeV is treated in terms of a simplistic distortedwave Born approximation transfer. The halo neutrons involved in the reaction are treated as a dineutron cluster ... 
Duality constructions from quantum state manifolds
(Springer, 20151120)The formalism of quantum state space geometry on manifolds of generalised coherent states is proposed as a natural setting for the construction of geometric dual descriptions of nonrelativistic quantum systems. These state ...