Browsing Masters Degrees (Physics) by Issue Date
Now showing items 1-20 of 146
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Theoretical studies of the crossfield current-driven ion acoustic instability.
(1979)Abstract available in PDF file. -
A study of the 90Zr(n,d)89Y reaction.
(1986)A study has been made of the 90 Zr(n,d) 89 Y reactlion at an incident neutron energy of 22 MeV. The experimental aspect of the study was performed at the Van der Graaf facility at the National Accelerator Centre, ... -
The crossfield current-driven ion acoustic instability in a two-ion plasma.
(1987)The behaviour of the crossfield current-driven ion acoustic instability in a plasma containing two ion species is theoretically examined. In our model the electrons are assumed to be hot and the ions cold, i.e. Tₑ »Tᵢ (~ ... -
Nuclear structure studies with (n,d) reactions.
(1988)The ²⁷AI(n,d)²⁶Mg and ⁵⁶Fe(n,d)⁵⁵Mn reactions have been studied at 22 MeV incident energy. The 6MV Van de Graaff facility at the National Accelerator Centre, Faure was used for the experimental aspects. An (n, charged ... -
Profile analysis of X-ray powder diffraction data.
(1988)Various strategies have been tested for obtaining integrated intensities from x-ray powder diffractometer data. An asymmetric pseudo-Voigt profile function was used to fit the pattern in the region above 2θ = 35̊ (Cu-Kα ... -
High repetition rate continuously tunable CO2 laser system investigation.
(1990)The purpose of this thesis was to investigate certain factors important for the operation of a high repetition rate continuously tunable CO2 laser. The tuning range of specific importance for this research program was ... -
Linear properties of the cross-field ion acoustic instability in a double plasma device.
(1990)This thesis deals with the dependence of the linear spatial growth rate of the cross-field ion acoustic instability on various plasma parameters. A kinetic theory model, with elastic and inelastic ion-neutral collisions ... -
A satellite and ground based study of fine structure in VLF whistlers.
(1992)The matched filtering technique for improving the spectral resolution of VLF whistlers, originally developed by Bhegin and Siredey (1964), has proven to be useful for extracting information about the magnetospheric plasma ... -
Mössbauer study of the hyperfine magnetic field and electric field gradient at Fe sites in synthetic diamond.
(1992)Mossbauer Spectroscopy has been used to investigate the site of Fe inclusions in a suite of synthetic diamonds (de Beers MDAS). Information on the hyperfine magnetic fields and electric field gradients at Fe sites in ... -
A study of plasma source ion implantation.
(1993)The work described in this thesis is an analysis of the Plasma Source Ion Implantation (PSII) process. A metal target is placed within a plasma, and pulsed to a high negative potential (10 - 50 kV). The electrons in the ... -
Radiating solutions with heat flow in general relativity.
(1994)In this thesis we model spherically symmetric radiating stars dissipating energy in the form of a radial heat flux. We assume that the spacetime for the interior matter distribution is shear-free. The junction conditions ... -
Modelling of the ballooning instability in the near-earth magnetotail.
(1995)In recent years, many alternative models of the substorm process have been proposed to explain different aspects of this magnetospheric phenomenon. Some features in these competing models are compatible while others, such ... -
Phase transitions in induced lattice gauge models.
(1995)The present research is based on the study of the phase structure of lattice models incorporating selfinteracting scalars and gauge background fields otherwise known as induced gauge models. Emphasis is placed on the effect ... -
An interferometric investigation of the quadratic electro-optic effect in KDP.
(1995)Abstract available in PDF. -
Two-dimensional plasma sheath observations in plasma source ion implantation.
(1996)Plasma Source Ion Implantation (PSII) is the process of implanting high energy ions [10-50 keV] into metallic targets, by pulsing them negatively whilst immersed in a background plasma. PSII achieves surface hardening, ... -
A theoretical investigation of birefringences in cubic and uniaxial magnetic crystals.
(1997)In this thesis a consistent multipole theory is used to describe light propagation in nonabsorbing magnetic cubic and uniaxial crystals to the order of electric octopoles and magnetic quadrupoles. The first chapter extends ... -
The effect of antisymmetrization in diquark models of baryons.
(1997)In this thesis the effect of antisymmetrization in diquark models of baryons composed of light (u and d) quarks is investigated. The diquark in this study is considered alternately as a pointlike and as a composite ...