Abstract
The Korea Research Institute of Standards and Science (KRISS) participated in the BIPM.RI(II)-K4.Tc-99 m comparison of activity measurements of 99mTc. We develop the national primary standard for 99mTc solution used during the comparison. We use two primary liquid scintillation counting techniques for the standardization: digital coincidence counting with the 4πβ(LS)-γ(NaI(T1))system and triple-to-double coincidence ratio counting. Both methods give consistent results for the specific activity of a 99mTc solution. Adopting the result from the DCC method as the reference value of the 99mTc measurement, we evaluate the standard uncertainty of 0.856% for the KRISS primary standard of the 99mTc activity. The K4 comparison result shows that the newly-established KRISS primary standard lies within the standard uncertainty with the key comparison reference value defined from other 99mTc measurements.
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Lee KB, Lee JM, Park TS, Oh PJ, Lee SH, Lee MK (2011) Application of digital sampling techniques for 4πβ(LS)-γ coincidence counting. Nucl Instrum Methods Phys Res, Sect A 626–627:72–76
Lee KB, Lee JM, Park TS, Lee SH (2010) Development of a high-efficiency 4πβ(LS)-γ coincidence system for direct measurements of activity in radioactive decay. IEEE Trans Nucl Sci 57(5):2613–2616
Lee KB, Lee JM, Park TS, Hwang HY (2004) Implementation of TDCR method in KRISS. Nucl Instrum Methods Phys Res, Sect A 534(3):496–502
DDEP (2004) Decay data evaluation project data. http://www.nucleide.og/DDEP_WG/Nuclides/Tc-99m_tables.pdf
Lee KB, Lee JM, Park TS, Lee SH (2010) Construction of classical confidence regions of model parameters in nonlinear regression analyses. Appl Radiat Isot 68(7–8):1261–1265
Bar J, Sempau J, Fernndez-Varea JM, Salvat F (1995) Penelope: an algorithm for Monte Carlo simulation of the penetration and energy loss of electrons and positrons in matter. Nucl Instrum Methods Phys Res, Sect B 100(1):31–46
Michotte C, Park TS, Lee KB, Lee JM, Lee SH (2012) Comparison of 99mTc activity measurements at the KRISS using the new SIRTI of the BIPM. Appl Radiat Isot 70(9):1820–1824
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Lee, K.B., Lee, J.M., Park, T.S. et al. Activity standardization of 99mTc using liquid scintillation counting method. J Radioanal Nucl Chem 316, 1047–1052 (2018). https://doi.org/10.1007/s10967-018-5884-3
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DOI: https://doi.org/10.1007/s10967-018-5884-3