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Evaluation of independent and cumulative fission product yields with gamma spectrometry

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Abstract

Fission product yields are critical data for a variety of nuclear science and engineering applications; however, independent yields have not been extensively measured to date. We have previously documented a methodology to measure the cumulative and independent fission product yields using gamma spectrometry and nuclide buildup and decay modeling, and numerical optimization. We have produced fission products by bombarding 235U with 14.1 MeV neutrons and made measurements of fission product yields. In this paper, we summarize our approach, describe initial experiments, and present preliminary results where we have determined nine fission product yields for long-lived nuclides.

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Notes

  1. The optimization problem shown in Equation (3) is convex and thus has a global minimum. Convexity follows from the non-negative sum of two convex functions (a norm and a parabola) defined on a convex domain, \(\mathbb {R}_+^N\). See [10] for a complete discussion.

  2. Parent/daughter chains are written with a slash.

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Acknowledgments

This material is based upon work supported by the U.S. Department of Homeland Security under Grant Award Number, 2012-DN-130-NF0001-02. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Department of Homeland Security.

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Authors and Affiliations

  1. University of Texas at Austin, 10100 Burnet Rd., Bldg. 159, Austin, TX, 78758, USA

    Kenneth Dayman & Steven Biegalski

  2. Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA

    Derek Haas, Amanda Prinke & Sean Stave

Authors
  1. Kenneth Dayman
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  2. Steven Biegalski
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  3. Derek Haas
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  4. Amanda Prinke
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  5. Sean Stave
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Corresponding author

Correspondence to Kenneth Dayman.

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Dayman, K., Biegalski, S., Haas, D. et al. Evaluation of independent and cumulative fission product yields with gamma spectrometry. J Radioanal Nucl Chem 307, 2239–2245 (2016). https://doi.org/10.1007/s10967-015-4491-9

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  • DOI: https://doi.org/10.1007/s10967-015-4491-9

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