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Related Experiment Videos

Standardization of 192Ir solution at BARC.

R Anuradha1, Leena Joseph, D B Kulkarni

  • 1Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|February 11, 2005
PubMed
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Radioactive iridium-192 (192Ir) solutions were precisely measured at Bhabha Atomic Research Centre (BARC) using primary and secondary standardization methods. Results confirmed consistency, ensuring accurate radioactivity concentration for research and industry.

Area of Science:

  • Nuclear physics
  • Metrology
  • Radiochemistry

Background:

  • Accurate standardization of radioactive sources is crucial for international comparisons and applications.
  • The Bureau International des Poids et Measures (BIPM) coordinates international intercomparison programs for radioactivity measurements.

Purpose of the Study:

  • To standardize a radioactive 192Ir solution at Bhabha Atomic Research Centre (BARC).
  • To compare results obtained from primary (4πβ-γ coincidence) and secondary (4πγ counting) standardization methods.
  • To contribute to international radioactivity measurement accuracy under the BIPM program.

Main Methods:

  • Standardization of 192Ir solution using the 4πβ-γ coincidence counting technique (primary method).
  • Standardization of 192Ir solution using the 4πγ counting technique (secondary method).

Related Experiment Videos

  • Activity concentration determination via efficiency extrapolation technique.

    • Main Results:

    • The activity concentration of the 192Ir solution determined by the 4πβ-γ coincidence method was 203.15 kBq g⁻¹ with a combined uncertainty of ±0.3%.
    • The activity concentration determined by 4πγ counting was 202.88 kBq g⁻¹ with a combined uncertainty of ±1.3%.
    • Both measurement results were found to be comparable within their respective uncertainty limits.

    Conclusions:

    • The 4πβ-γ coincidence and 4πγ counting methods provide comparable results for 192Ir solution standardization.
    • The detailed uncertainty budgets for both methods support the reliability of the measurements.
    • The standardization at BARC aligns with international metrology standards coordinated by BIPM.