Accelerator Mass Spectrometry with 53Mn at University of Notre Dame

Mr Thomas Bailey1, Ms Lauren Callahan1, Mr Adam Clark1, Dr Philippe Collon1, Mr Austin Nelson1, Dr Michael Paul2, Dr Anton Wallner3,4

1University Of Notre Dame, Notre Dame, United States, 2Hebrew University of Jerusalem, Jerusalem, Israel, 3Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, 4Australian National University, Canberra, Australia

A new sensitivity measurement for ⁵³Mn is presented. 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).


Thomas is a graduate student working with the AMS group at Notre Dame under his advisor Philippe Collon. He graduated with his Bachelor’s Degree from NC State University in 2019 and is currently working towards his PhD at Notre Dame

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Nov 17 2021


10:45 am - 11:30 am