Keywords
NaI(Tl)
TCS-172
dead time
two-source method
TCS-172
dead time
two-source method
How to Cite
1.
Pham DQ. Determination of the dead time of the TCS-172 gamma survey meter by using the two-source method. hueuni-jns [Internet]. 2025Dec.24 [cited 2026Feb.5];134(1D):83-9. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/7957
Abstract
Dead time is one of several major parameters of a nuclear radiation measurement system. To estimate the dead time and its uncertainty for the TCS-172 gamma survey meter at the Training Center of the Nuclear Research Institute, we conducted 240 count rate measurements using the two-source method with the non-paralysable model and two standard radioactive sources, Cs-137 and Co-60. The results indicate that the dead time for this instrument was 11.29 µs, with an uncertainty of ±1.01 µs. These values align closely with those presented in the textbook and several articles.
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