Conveners
W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)
- Kirk Michaelian (Natural Resources Canada)
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Prof. William Kieser (Lalonde AMS Lab, Dept of Physics, uOttawa)15/06/2016, 08:30Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Non-Student) / orale (non-étudiant)In Accelerator Mass Spectrometry (AMS), research into new analytical technologies, the development of new applications, as well as the improvement of existing techniques frequently requires extensive experimental time using ion sources and their associated low energy analytical equipment. To support our research and development program at the André E. Lalonde AMS Laboratory, we are completing...Go to contribution page
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Jack Cornett (University of Ottawa)15/06/2016, 08:45Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Non-Student) / orale (non-étudiant)We developed a simple method to separate Pu and Am isotopes from the sample matrix using a single extraction chromatography column and to measure the concentrations of the isotopes by isotope dilution accelerator mass spectrometry (AMS). Pu and Am in the extraction chromatography column eluent were coprecipitated with NdF3 or Fe(OH)3 and the precipitates were analyzed by AMS at the University...Go to contribution page
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Ms Pamela Wee (Agilent Technologies Canada Inc)15/06/2016, 09:00Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Non-Student) / orale (non-étudiant)This paper summarizes the accomplishments-to-date of the Agilent 8800 ICP-MS/MS in the direct determination of the radionuclides, 90Sr+, 129I+, 137Cs+, 238Pu+, 239Pu+, and 236U+/238U+ ratios by tandem mass spectrometry with chemical resolution using gas-phase ion chemistry. The ICP-MS/MS configuration consists of a collision reaction cell (CRC) between two quadrupole mass filters, Q1 and...Go to contribution page
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Xiaolei Zhao (University of Ottawa)15/06/2016, 09:15Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Non-Student) / orale (non-étudiant)The use of 41Ca as a sensitive long-period tracer for osteoporosis diagnoses is made possible by accelerator mass spectrometry (AMS), with which CaF3- ions are produced and the resulting MeV positive 41Ca ions are counted. When the ion energy is sufficiently high, 41Ca and its interfering isobar 41K can be well separated by their dE/dx differences in the final ionization detector. Such...Go to contribution page
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Prof. Dominic Lariviere (Chemistry Department, Laval University)15/06/2016, 09:30Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Non-Student) / orale (non-étudiant)In this work, a technological development to determine the age of radioactive strontium sources through the [Zr-90]/[Sr-90] ratio using mass spectrometry and liquid scintillation to quantify both isotopes is presented. Because Sr-90 and Zr-90 are isobaric interferences in mass spectrometry, a radiochemical separation to isolate Zr-90 has been shown to be mandatory prior to analysis. Four...Go to contribution page
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Ms Marie-Eve Lecavalier (Chemistry department, Laval university)15/06/2016, 09:45Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)The understanding of the health impact of low dose exposition to ionizing radiation is one of the scientific challenges of this century. To insure a proper assessment of the exposition to radioactivity, different methods of detection have been investigated. One of the most common detection methods is liquid scintillation counting, which convert the radiation energy into a light signal with the...Go to contribution page
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Mr Guillaume Blanchet-Chouinard (Chemistry department, Laval University)15/06/2016, 10:00Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)Isotopes such as Sr-90, Cs-137 Pb-210 and Po-210 are often the most important contributors to human radiation exposure due to their short half-life. The radiotoxicity of Pb-210 originates from its relatively long half-life compared with time of fulfillment of environmental processes and the high energy associated with the decay of its progeny, such as Po-210.[1] For these reasons, Pb-210 has...Go to contribution page
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Ms Claire Dalencourt (Chemistry Department, Laval University)15/06/2016, 10:15Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)Easily determine the radioactive behavior of a sample becomes one of the challenge of the industrialized world. Due to the enhancement of nuclear and mining activities, it is relevant to quantify the radioactivity effect of these activities and especially for nuclear disaster such as Fukushima within a short time. It currently exists a lot of method to analyse the most impact radionuclides of...Go to contribution page