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Initial tests of Accelerator Mass Spectrometry with the Argonne Gas-Filled Analyzer and the commissioning of the MONICA detector

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
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  1. Univ. of Notre Dame, IN (United States)
  2. Hebrew Univ. of Jerusalem (Israel)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
+ Show Author Affiliations
As the scope of Accelerator Mass Spectrometry (AMS) expands, there is an increased need to extend the capability of isobaric separation to the medium-heavy mass region. Existing AMS facilities are limited in their ability to separate radioactive nuclei in the A = 100–200 range of interest from their neighboring stable isobars, as such measurements require higher energies than available in most facilities. ATLAS is one of the highest energy system used for AMS based experiments and has enabled isobaric discrimination for medium to heavy nuclides, notably via the Gas-Filled Magnet technique. Further, a preparatory experiment performed in November, 2019, successfully demonstrated isobaric separation of 92Zr-92Mo using the Argonne Gas-Filled Analyzer (AGFA) with high magnetic rigidity. Since that time, MONICA, an eight-anode ionization chamber that measures both energy loss and position with two sets of split anodes, has been developed to aid in AMS experiments at AGFA and has undergone four commissioning runs at the Nuclear Science Laboratory at the University of Notre Dame utilizing Si, Fe/Ni, and Mn beams. This report presents the AGFA AMS run (November 2019) and the subsequent commissioning runs of the MONICA detector, including preliminary measurements on the long-lived isotopes 39Ar (268 y) and for the first time on 42Ar (33 y).
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Israel Science Foundation; National Science Foundation (NSF); Pazy Foundation; USA-Israel Binational Science Foundation; USDOE Office of Science (SC), Nuclear Physics (NP); USNRC
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1908140
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, Journal Name: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms Vol. 532; ISSN 0168-583X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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journal January 2019
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journal October 2019
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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Argonne National Laboratory
Argonne gas-filled analyzer
Argonne tandem linac accelerator system
Nuclear Science Laboratory
University of Notre Dame
accelerator mass spectrometry
detectors