TY - JOUR
T1 - Initial tests of Accelerator Mass Spectrometry with the Argonne Gas-Filled Analyzer and the commissioning of the MONICA detector
AU - Callahan, Lauren K.
AU - Collon, P.
AU - Paul, M.
AU - Avila, M. L.
AU - Back, B. B.
AU - Bailey, T. L.
AU - Clark, A. M.
AU - Dickerson, C.
AU - Greene, J. P.
AU - Jayatissa, H.
AU - Jiang, C. L.
AU - Kashiv, Y.
AU - Nelson, A. D.
AU - McLain, J.
AU - Pardo, R. C.
AU - Potterveld, D.
AU - Rehm, K. E.
AU - Sahoo, R. N.
AU - Scott, R.
AU - Seweryniak, D.
AU - Tolstukhin, I.
AU - Vondrasek, R.
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - 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. 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).
AB - 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. 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).
KW - Accelerator Mass Spectrometry
KW - Argonne Gas-Filled Analyzer
KW - Argonne National Laboratory
KW - Argonne Tandem Linac Accelerator System
KW - Detectors
KW - Nuclear Science Laboratory
KW - University of Notre Dame
UR - http://www.scopus.com/inward/record.url?scp=85140711263&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2022.09.009
DO - 10.1016/j.nimb.2022.09.009
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AN - SCOPUS:85140711263
SN - 0168-583X
VL - 532
SP - 7
EP - 12
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -