Indication for Supernova Produced 60Fe Activity on Earth

K. Knie, G. Korschinek, T. Faestermann, C. Wallner, J. Scholten, and W. Hillebrandt
Phys. Rev. Lett. 83, 18 – Published 5 July 1999
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In a deep ocean ferromanganese crust an excess of 60Fe radioactivity was measured by means of high sensitivity accelerator mass spectrometry. The enhanced concentrations measured in the first two of three layers (corresponding to a time span of 0–2.8 Myr and 3.7–5.9 Myr, respectively) suggest the deposition of supernova produced 60Fe on earth. There is even a weak indication that the flux into the crust was higher about 5 Myr ago.

  • Received 14 December 1998


©1999 American Physical Society

Authors & Affiliations

K. Knie1,2, G. Korschinek1,*, T. Faestermann1, C. Wallner1, J. Scholten3, and W. Hillebrandt2

  • 1Technische Universität München, Physik-Department, 85748 Garching, Germany
  • 2Max-Planck Institut für Astrophysik, 85740 Garching, Germany
  • 3Geologisch-Paläontologisches Institut, Universität Kiel, 24098 Kiel, Germany

  • *To whom the correspondence should be addressed.

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Vol. 83, Iss. 1 — 5 July 1999

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