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Measurements of sealed radioactive sources by using isothermal microcalorimetry

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Abstract

We have studied to validate the calorimetric method by comparing the 123I radioactivity measurement results with the national standard. The reason for using 123I was to determine how much it absorbs radiation decay energy due to γ and electron capture transitions. In addition, due to the characteristic of the calorimeter, stabilization time is required, and we have determined that the half-life time of 123I is long enough to overcome this problem. We compared two measurement results (calorimeter and ion chamber) and confirmed that the rate of power reduction in the calorimeter was similar to the half-life time of 123I.

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Acknowledgements

I appreciate to supporting of Center for Ionizing Radiation in Division of Chemical and Medical Metrology at Korea Research Institute of Standards and Science (KRISS).

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Authors and Affiliations

  1. Radiation Center, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Korea

    Young Jin Park, K. B. Lee, J. M. Lee, T. S. Park & S. H. Hwang

  2. Science of Measurement, University of Science and Technology, 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Korea

    Young Jin Park, K. B. Lee & J. M. Lee

Authors
  1. Young Jin Park
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  2. K. B. Lee
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  3. J. M. Lee
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  4. T. S. Park
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  5. S. H. Hwang
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Correspondence to K. B. Lee.

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Park, Y.J., Lee, K.B., Lee, J.M. et al. Measurements of sealed radioactive sources by using isothermal microcalorimetry. J Radioanal Nucl Chem 316, 1195–1203 (2018). https://doi.org/10.1007/s10967-018-5886-1

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  • DOI: https://doi.org/10.1007/s10967-018-5886-1

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