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Updated: Jun 26, 2026
08:53
Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
Published on: June 6, 2018
Measurements of the 82Sr half-life
L Pibida1, R Fitzgerald, M Unterweger
1National Institute of Standards and Technology, 100 Bureau Dr. Stop 8462, Gaithersburg, MD 20899, USA. leticia.pibida@nist.gov
Summary
The half-life of Strontium-82 (82Sr) was precisely measured using two advanced techniques. Results confirm the 82Sr half-life is approximately 25.35 days, crucial for nuclear science applications.
Area of Science:
- Nuclear Physics
- Radiochemistry
- Metrology
Background:
- Accurate half-life determination is essential for nuclear applications, including medical imaging and waste management.
- Strontium-82 (82Sr) is a significant radioisotope with various applications.
- Previous measurements of the 82Sr half-life may have variations requiring precise re-evaluation.
Purpose of the Study:
- To conduct a high-precision measurement of the 82Sr half-life.
- To compare results obtained from two independent measurement techniques.
- To provide an updated and reliable value for the 82Sr half-life.
Main Methods:
- Utilized gamma-ray spectrometry for precise photon detection.
- Employed a 4pigamma pressurized ionization chamber for sensitive activity measurements.
- Conducted measurements at the National Institute of Standards and Technology (NIST) ensuring metrological standards.
Main Results:
- Gamma-ray spectrometry yielded a 82Sr half-life of 25.36 ± 0.03 days (k=1).
- The 4pigamma pressurized ionization chamber measurements resulted in a 82Sr half-life of 25.34 ± 0.02 days (k=1).
- Both methods provided consistent and highly precise results for the 82Sr half-life.
Conclusions:
- The measured half-life of 82Sr is approximately 25.35 days.
- The consistency between the two independent methods validates the accuracy of the results.
- This precise half-life value is critical for accurate quantification in nuclear science and related fields.
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