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 9 of 9 for “"Ion Chambers"”.
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Study of the use of Electret Ion chambers as radom dosimeters in South Africa
… gas which has been shown to be a major contribution to background dose. The underground mines in South Africa present a major occupational hazard. A need for cheap personal monitoring has been identified. In this thesis, commercially available electret ion chambers (EICs) are studied, with a view …
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Neutron dosimetry, moderated energy spectrum, and neutron capture therapy for ²⁵{45}R²Cf medical sources
Examination of neutron dosimetry for 252Cf has been conducted using calculative and experimental means. Monte Carlo N-ParticIe (MCNP) transport code was used in a distributed computing environment as a parallel virtual machine (PVM) to determine the absorbed neutron dose and neutron energy spectrum …
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Facilitating the Clinical Translation of Flash Radiotherapy Through Dosimetry Development and Beam Parameter Optimization
… Professor: Emil Schüler, PhD</p> <p>Radiation therapy (RT) is a crucial component of curative cancer therapy, with a majority of cancer patients in the United States receiving RT as part of treatment. The goal of RT is to maximize the therapeutic index in curing disease while minimizing any …
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The Correlation Between Electrical Pulses and Light Flashes in a Proportional Counter.
A proportional counter is a device used to measure the energy spectra of charged particles and photons. The charged particle ionizes the gas molecules along its path. In the presence of a strong electric field, the electrons and ions are swept toward the collecting electrodes. The electric field …
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Development and optimization of new generation start-up instrumentation systems (SUI) for domestic CANDU reactors
… in order to ensure a safe and reliable production of energy. The research objectives of this thesis will focus on methodology for modernization of Start-Up Instrumentation (SUI), both in-core and Control Room equipment, using a new generation of detectors and cables in order to manage …
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Optimization of a GEM-based detector to measure tritium and discriminate against other radiation types
Tritium poses a radioprotection issue, in the Canadian Nuclear industry due to the operation of its fleet of Canadian Deuterium Uranium (CANDU) heavy water reactors. Although it is a less penetrative radionuclide, tritium is shown to have a detrimental effect on the human body when ingested, …
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Modelling the effect of ventilation on the concentration and distribution of radon in closed environments
… classified as a human carcinogen by The International Agency for Research on Cancer. One of the most effective techniques used to mitigate radon is adequate ventilation, which can be natural (e.g., natural winds) or mechanical (e.g., fans). Recently, Computational Fluid Dynamics (CFD) has become …
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Measurement of a Neutron Pulse Propagation Velocity in a Homogeneous Mediuim
Made available in DSpace on 2017-07-06T18:48:19Z (GMT). No. of bitstreams: 2 Guyot_Jean_C_MS.pdf: 16806523 bytes, checksum: 311bbfaa131263f4d04a039a5bee8bac (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1964
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Monte Carlo Analysis and Physics Characterization of a Novel Nanoparticle Detector for Medical and Micro-dosimetry Applications
<p>The outcomes for both (i) radiation therapy and (ii) preclinical small animal radio- biology studies are dependent on the delivery of a known quantity of radiation to a specific and intentional location. Adverse effects can result from these procedures if the dose to the target is too high or low, …