Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 119 for “"530 Physics"”.
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Leveraging Forward Detectors at CERN to Investigate Properties and Extensions of the Standard Model
… success of the Standard Model (SM) of particle physics lies in its comprehensive description of the dynamics governing the behaviour of microscopic constituents of our Universe, ultimately translated into the discovery of a Higgs boson-like particle at CERN. Despite its predictive power, several …
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A study of microwave induced plasmas
In a microwave induced plasma (MIP) generated in argon under atmospheric pressure using slab-line and TM 10 cavities, the electron density (Ne), excitation and rotational temperatures, detection limit and matrix factor for nine elements and microwave impedance have been determined for a range of …
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An investigation of the motion of liquid short chain molecules using Rayleigh-Brillouin spectroscopy
Dynamic laser light scattering spectroscopy is used to study the motion of short chain flexible molecules in the liquid state. Depolarised Rayleigh-Brillouin scattering is used to investigate the isomers of the homologous alkane series n-pentane to n-octane. In addition to the low frequency …
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Infrared spectrum of hafnium
The construction and operation of microwave excited hafnium discharge tubes is described.
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Fundamental properties of a microwave induced argon plasma
The behaviour of a microwave excited electrodeless argon discharge is investigated at pressures between 0.02 and 6.00 mbar. Spectroscopic measurements of twenty one emission lines of the argon I spectrum and seven lines of the argon II spectrum are combined with microwave impedance and Langmuir …
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Kelvin waves in a shoaling shallow sea
We revisit Taylor's problem and discuss some model test problems both through Taylor's approach and other numerical methods such as a 'Finite approximation method' and 'Green's function technique'. The solutions generated by each method are compared for consistency. The objective lies in the fact …
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Theories of the uniform public column
The uniform longitudinal electric field commonly found in positive columns is discussed in relation to the "quasi-neutral" state of the plasma.
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Some investigations of the nitric oxide afterglow
The nitric oxide afterglow of a low pressure pulsed R.F. glow discharge in nitrogen with small admixtures of oxygen has been investigated.
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The physics of sputtering
Early sputtering observations were made in the abnormal glow discharge at pressures around 1 mm Hg and indicated that the mass sputtered per unit charge passed through the discharge tube varied linearly with the cathode fall of potential.
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Probes in gaseous plasmas
From the time of Langmuir measurements of the current-potential characteristic of a small electrode probe immersed in a partially ionised gas have been used for the quantitative study of plasmas. The plasma parameters of interest are electron and ion temperature, electron and ion concentration, and …
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An examination of some experimental methods of comparing intensities of spectrum lines
Several methods of comparing intensities of spectrum lines are described, using photographic plates, photomultipliers and photo-resistive cells as the measuring instruments. The performance of each of these detectors was assessed by using them, in turn, to determine the intensity ratios of the …
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The delay interval of electrical breakdown in gases
A survey is given of the time required, and the physical processes which occur, during the delay interval between the application across two cold electrodes of a uniform electric field of sufficient magnitude to produce breakdown and the actual instant of breakdown.
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Novel opto-electronic and plastic fibre sensors
The design and performance of a novel displacement sensor is investigated both theoretically and experimentally. This is an optical, extrinsic and differential sensor based on the inverse square law and is insensitive to source intensity variations. It can, in principle, be implemented using only …
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Mathematical and computational modelling for the design of pipe bends and compliant systems
This thesis is divided into three parts. In part I some theoretical and numerical processes are considered which arise when modelling the flow of a fluid through a pipe bend or deflector nozzle. These numerical processes include a new form of numerical integration and a finite element formulation …
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MBE growth and investigation of (001) GaAs surfaces using SIMS
An MBE system has been designed and constructed. After identification and elimination of various problems, high mobility, Si-doped , n-tYfe GaAs has been grown with electron concentration from ~ 5 x 10[to the power of]15 cm[to the power of]-3 (u 77 ~ 30,000 cm[squared]/Vs) to a solubility limit at …
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