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Ultratrace analysis of calcium with high isotopic selectivity by diodelaser resonance ionisation mass spectrometry

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Abstract

A resonance ionisation mass spectrometer for the ultratrace determination of calcium isotopes is presented. It achieves high overall efficiency, ultra-high isotopic abundance sensitivity of more than 1010 and complete suppression of isobars. The system can be used for isotope ratio studies on stable and long-lived trace isotopes with the final goal of radiodating via 41Ca-determination. For the different applications optical one-, two- or three-step resonance excitation and subsequent ionisation is applied using simple and inexpensive diodelasers. Additional mass analysis is accomplished in a commercial quadrupole mass spectrometer. The experimental set-up and first results on synthetical and meteorite samples are described.

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Authors and Affiliations

  1. Institut für Physik, Universität Mainz, D-55099 Mainz, Germany, , , , , , DE

    K. Wendt, K. Blaum, F. Juston, W. Nörtershäuser & B. Wiche

  2. Institut für Kernchemie, Universität Mainz, D-55099 Mainz, Germany, , , , , , DE

    N. Trautmann

  3. Battelle Pacific Northwest Laboratories, P.O. Box 999, Richland, WA 99 352, USA, , , , , , US

    B. A. Bushaw

Authors
  1. K. Wendt
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  2. K. Blaum
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  3. B. A. Bushaw
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  4. F. Juston
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  5. W. Nörtershäuser
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  6. N. Trautmann
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  7. B. Wiche
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Additional information

Received: 10 November 1996 / Revised: 18 February 1997 / Accepted: 19 February 1997

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Wendt, K., Blaum, K., Bushaw, B. et al. Ultratrace analysis of calcium with high isotopic selectivity by diodelaser resonance ionisation mass spectrometry. Fresenius J Anal Chem 359, 361–363 (1997). https://doi.org/10.1007/s002160050587

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  • DOI: https://doi.org/10.1007/s002160050587

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