Intercomparison measurements between accelerator and laser based mass spectrometry for ultra-trace determination of ⁴¹Ca in the 10^-11–10^-10 isotopic range

Geppert, C., Müller, P., Wendt, K., Schnabel, C., Synal, H.-A., Herpers, U. and Merchel, S. (2005) Intercomparison measurements between accelerator and laser based mass spectrometry for ultra-trace determination of ⁴¹Ca in the 10^-11–10^-10 isotopic range. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 229(3-4), pp. 519-526. (doi: 10.1016/j.nimb.2004.12.122)

Abstract

Selective ultra-trace determination of the long-lived radioisotope ⁴¹Ca has applications in environmental and biomedical research, as well as in cosmochemistry. We have conducted an intercomparison between the two currently available methods for measurement at these low (radio) activities: accelerator mass spectrometry (AMS) and resonance ionization mass spectrometry (RIMS). Three artificially produced ⁴¹Ca samples, primarily of cosmochemical importance, with isotopic abundances in the range of 10⁻¹¹–10⁻¹⁰ were used and results of these measurements show good agreement between the two methods, within the experimental uncertainties.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Schnabel, Dr Christoph
• Authors: Geppert, C., Müller, P., Wendt, K., Schnabel, C., Synal, H.-A., Herpers, U., and Merchel, S.
• College/School: College of Science and Engineering > Scottish Universities Environmental Research Centre
• Journal Name: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• Publisher: Elsevier B.V.
• ISSN: 0168-583X
• ISSN (Online): 1872-9584
• Published Online: 08 February 2005