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Spontaneous fission yields for 238U in molybdenum measured in Archaean zircons

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Abstract

The relative cumulative fission yields of 95,97,98,100Mo produced by spontaneous fission of 238U contained in Archaean zircons, were measured by sensitive thermal ionization mass spectrometry (TIMS). The relative yields for 95,97,98,100Mo are 0.58 : 1.08 : 1.04 : 1.0, respectively. Combined with mass spectrometrically-determined 99,101,102,104Ru fission yields,1 the mass distribution from 95£A£104 can be delineated. Assuming an “absolute” fission yield of 6.1±0.4% for the cumulative fission yield at mass 97, it is possible to express the Mo and Ru relative spontaneous fission yields for 238U as “absolute” values. There is no evidence for a significant isotope anomaly at mass 98.

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Authors and Affiliations

  1. Department of Physics and Astronomy, The University of Calgary, Calgary, Alberta, Canada, T2N 1N4

    M. E. Wieser

  2. Department of Applied Physics, Curtin University of Technology, GPO Box U1987, Perth, Western Australia, 6845, Australia

    J. R. De Laeter

Authors
  1. M. E. Wieser
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  2. J. R. De Laeter
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Wieser, M.E., De Laeter, J.R. Spontaneous fission yields for 238U in molybdenum measured in Archaean zircons. Journal of Radioanalytical and Nuclear Chemistry 261, 95–100 (2004). https://doi.org/10.1023/B:JRNC.0000030940.80383.de

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  • DOI: https://doi.org/10.1023/B:JRNC.0000030940.80383.de

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