Development of an AMS method to study oceanic circulation characteristics using cosmogenic 39Ar

Ph Collon, M. Bichler, J. Caggiano, L. De Wayne Cecil, Y. El Masri, R. Golser, C. L. Jiang, A. Heinz, D. Henderson, W. Kutschera, B. E. Lehmann, P. Leleux, H. H. Loosli, R. C. Pardo, M. Paul, K. E. Rehm, P. Schlosser, R. H. Scott, W. M. Smethie, R. Vondrasek

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


Initial experiments at the ATLAS facility [Nucl. Instr. and Meth. B 92 (1994) 241] resulted in a clear detection of cosmogenic 39Ar signal at the natural level. The present paper summarizes the recent developments of 39Ar AMS measurements at ATLAS: the use of an electron cyclotron resonance (ECR) positive ion source equipped with a special quartz liner to reduce 39K background, the development of a gas handling system for small volume argon samples, the acceleration of 39Ar8+ ions to 232 MeV, and the final separation of 39Ar from 39K in a gas-filled spectrograph. The first successful AMS measurements of 39Ar in ocean water samples from the Southern Atlantic ventilation experiment (SAVE) are reported. Published by Elsevier B.V.

Original languageEnglish (US)
Pages (from-to)428-434
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue numberSPEC. ISS.
StatePublished - Aug 2004
Externally publishedYes


  • Accelerator mass spectrometry
  • Ar
  • Ocean circulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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