SELECTION OF THE MEASURING TIME IN THE ABSOLUTE COUNTING OF RADIOACTIVITY

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Feng Xi-zhang, Zhao Zhen-lan and Tang Nai-xun. SELECTION OF THE MEASURING TIME IN THE ABSOLUTE COUNTING OF RADIOACTIVITY[J]. Chinese Physics C, 1980, 4(6): 771-773.
Feng Xi-zhang, Zhao Zhen-lan and Tang Nai-xun. SELECTION OF THE MEASURING TIME IN THE ABSOLUTE COUNTING OF RADIOACTIVITY[J]. Chinese Physics C, 1980, 4(6): 771-773. shu
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Received: 1980-02-25
Revised: 1900-01-01
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SELECTION OF THE MEASURING TIME IN THE ABSOLUTE COUNTING OF RADIOACTIVITY

Abstract: The present paper pionted out that in the measurement of the number of atomsof a radioactive isotope in a sample at time t0, the error introduced through the in-accuracy of its decay constant (λ) can be reduced to a much smaller value by thecareful selection of the time of measurement or measurements of its radioactivity ataround one life time (1/λ) after t0 and doing the calculation.

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