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J Radiat Prot > Volume 10(2); 1985 > Article
Journal of Radiation Protection 1985;10(2):130-0.
$^{133}Ba$ 용액의 방사능 절대측정의 국제비교
박태순;오필제;황선태;
International Comparison of Absolute Activity Measurement of $^{133}Ba$ Solution
Park, Tae-Soon;Oh, Pil-Jae;Hwang, Sun-Tae;
ABSTRACT
The activity measurement of a solution of $^{133}Ba$ which is an electron capture nuclide was carried out by the ${beta}-{gamma}$ coincidence method. The counting rates at the ${beta}-,;{gamma}-$, and coincidence-channels were measured using a $4{pi}$ proportional counter and two NaI(Tl) scintillation detectors. The specific activity of the solution calculated by the efficiency extrapolation was $(1151.01{pm}2.99)kBqg^{-1}$ at the reference time(00h UT, 03-15-84). According to an international comparison of activity measurements organized by the Bureau International des Poids et Mesures, this result showed the difference of 0.94% to the mean value derived from the comparison.
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