Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1995, Vol. 6 ›› Issue (2): 113

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SYSTEMATIC ERROR FROM Th/U RATIO IN LUMINESCENCE AND ESR DATING

Li Shenghua and Man-Yin Wong Tso   

  1. Radioisotope Unit, University of Hong Kong, Hong Kong
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Li Shenghua and Man-Yin Wong Tso. SYSTEMATIC ERROR FROM Th/U RATIO IN LUMINESCENCE AND ESR DATING.Nuclear Science and Techniques, 1995, 6(2): 113

Abstract: In luminescence and ESR dating methods, total count rate from thick source alpha counting is commonly used for estimating annual dose with assumption of equal activities for both uranium and thorium decay chains. This is equal to a Th/U weight ratio of 3.2. The systematic error in total dose rate due to uncertainty of the ratio is calculated. It is found that the error is insignificant for uniformly distributed samples such as sediment, but can be significant for some extreme circumstances.

Key words: Luminescence and, ESR dating, Th/U ratio, Systematic error, Infinite matrix