Thesis (M.S.)--University of Michigan, 1971.

Thesis (Ph. D.)--University of Wisconsin, 1964. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves 123-125.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1963. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 69-70).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Rate measurements of the thiosulphate-bromoacetate reaction have been made in sodium chloride and sea water media at 15.3°, 25.2° and 32.0°C and in magnesium chloride at 15.3°C, Rates are more simply dependent on the concentration and kind of cations in the media than upon the ionic strength. The rate constants are approximately 6% higher in neutral solutions of sea water than in sodium chloride media and the higher rate constants are attributed to the presence in sea water of the cations, K⁺, Ca⁺⁺ and Mg⁺⁺. The energy of activation is 16,000±100 cal./mole and the entropy of activation is-6.6 e.u. for the reaction done in both media. The convergence of the rate curves in magnesium and sodium chloride media at high concentrations may be explained by the presence of undissociated species. The magnitude of the correction to the observed rate depends upon the concentration of the cations and the formation constant for the undissociated species. This explanation has been used to account for the decrease in rate in sea water that has been made alkaline. / Science, Faculty of / Chemistry, Department of / Graduate

A radio frequency excited positive ion source has been designed and constructed. Hydrogen gas is excited in a discharge tube by a radio frequency oscillator operating at a frequency of 210 mc./sec. The hydrogen is disassociated and ionized. A voltage of the order of a 2 kV is used to accelerate the positive ions through the exit canal in the end of the discharge tube. The positive ions are then accelerated and focused into a bean by two cylindrical electrostatic lenses using voltages of the order of 10 kV and 50 kV. For purposes of analysing a one lens system is used, accelerating the beam to an energy of the order of 15 kV. A magnetic analyser resolves up to mass three ions, focussing them into a Faraday cup. The source delivers a beam containing 45% protons. A total current of 800 microamperes of positive ions has been measured. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Thesis (Ph. D.)--University of Wisconsin--Madison, 1954. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

No description available.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

The proposed ion optics extraction geometry from ARIEL has been optimized based on simulations with Comsol. Geometrical parameters such as the acceleration gap and angle of the face of the vacuum chamber were studied in order to improve the beam 4-emittance and beam spot size. For geometries of interest, additional studies have been performed: voltage dependence, mass dependence, and the effect of the ion source misalignment on the beam parameters and how to compensate them. Simulations and experimental measurements were also performed for the current ISAC surface ion source to corroborate the simulation results. / Graduate / famaldo@uvic.ca