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Standardization of 109Cd by two methods.

Ming-Chen Yuan1, Yi-Chun Lin1, Wei-Han Chu1

  • 1Health Physics Division, Institute of Nuclear Energy Research, No. 1000 Wenhua Rd. Jiaan Village, Longtan District, Taoyuan City 32546, Taiwan (ROC).

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|November 5, 2017
PubMed
Summary
This summary is machine-generated.

Cadmium-109 (109Cd) activity was accurately measured using two coincidence counting techniques. These results established a radioactivity measurement standard for 109Cd, crucial for instrument calibration.

Keywords:
(109)Cd4π(LS)ce counting4πe-x coincidence counting

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Area of Science:

  • Nuclear Physics
  • Metrology
  • Analytical Chemistry

Background:

  • Cadmium-109 (109Cd) is a key radionuclide utilized in various calibration applications, including X-ray and gamma-ray spectroscopy.
  • Accurate activity determination of 109Cd is essential for maintaining reliable radioactivity measurement standards.

Purpose of the Study:

  • To precisely determine the activity concentration of a 109Cd solution.
  • To calibrate well-type ionization chambers using the determined 109Cd activity.
  • To establish and maintain the radioactivity measurement standard for 109Cd at the Institute of Nuclear Energy Research (INER).

Main Methods:

  • Employing 4π(PC)e-X coincidence counting for activity measurement.
  • Utilizing 4π(LS)ce counting as a complementary method for activity determination.
  • Cross-validating results from both coincidence counting techniques.

Main Results:

  • Both 4π(PC)e-X and 4π(LS)ce counting methods yielded consistent results for 109Cd activity.
  • The mean activity value obtained from the two methods demonstrated good agreement.
  • Successful calibration of well-type ionization chambers was achieved.

Conclusions:

  • The study successfully established a reliable radioactivity measurement standard for 109Cd.
  • The employed coincidence counting techniques provide accurate and reproducible activity measurements.
  • The calibrated ionization chambers ensure the traceability and accuracy of radioactivity measurements at INER.