Accelerator Mass Spectrometry with <sup>53</sup>Mn at the University of Notre Dame
ORAL
Abstract
Accelerator Mass Spectrometry (AMS) utilizes various ion counting techniques to measure ultra-low concentrations of long lived radioisotopes. At the University of Notre Dame’s Nuclear Science Laboratory (NSL), an FN Tandem accelerator is used in conjunction with a Browne-Buechner Spectrograph operated in gas-filled mode and various detection systems to perform AMS. A new split-anode ionization chamber, MONICA, went through multiple commissioning runs at the NSL. As part of these commissioning runs, standard material (53Mn/55Mn = 2.53*10-10) and independently measured samples for 53Mn were analyzed for the first time at the NSL. 53Mn is an isotope of interest in AMS as it can be used as a geological chronometer and be used to study the deposition of interstellar matter on Earth. The low level detection of this isotope is challenging due to its stable isobar of 53Cr and various suppression techniques are required to separate them. Analysis of the results and experimental techniques will be presented for this report.
*This work is supported by the National Science Foundation (Grant No. NSF PHY-2011890) and the Israel Science Foundation (Grant 876/19).
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Presenters
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Thomas L Bailey
- University of Notre Dame