Browsing Physics by Issue Date
Now showing items 1-20 of 245
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Field and model studies of the nearshore circulation.
(1967)Investigations into the characteristics and underlying mechanism of the circulation of water near the shore are reported. The two main types of circulation, one a cellular system resulting from Haves propagated nearly ... -
The morphology of radiation damage in copper irradiated with neutrons at elevated temperatures.
(1977)This thesis is an investigation of the radiation damage morphology of high purity copper crystals irradiated with fast neutrons at temperatures in the range of 250C to 4OO C. At these high temperatures neutron damage ... -
Aurora and associated VLF phenomena.
(1978)Observations have been made at Sanae (gm. lat. -63,71°) on occurring auroral forms, (diffuse and pulsating aurora), and simultaneous occurring VLF phenomena, (whistlers and auroral hiss) . Two studies ... -
Theoretical studies of the crossfield current-driven ion acoustic instability.
(1979)Abstract available in PDF file. -
Sound transmission analysis by sound intensimetry.
(1985)This thesis represents the development and evaluation of a theory for sound transmission analysis by sound intensimetry. In the context of this study sound transmission analysis is understood to embrace the following: (1) ... -
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 study of wave induced electron precipitation at low and middle latitudes.
(1991)Wave induced electron precipitation (WIEP) can modify the ionosphere above a sub-ionospherically propagating VLF signal in such a way as to perturb the amplitude and phase of the signal: The "Trimpi Event". In this ... -
Linear and nonlinear electron-acoustic waves in plasmas with two electron components.
(1991)Measurements of broadband electrostatic wave emIssons in conjunction with particle distributions in the earth's magnetosphere, have provided motivation for a number of studies of waves in plasmas with two electron components. ... -
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 ...