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- W207315719 abstract "As with new advances in any field, radiocarbon dating by accelerator mass spectrometry has to be treated with some scepticism until it has proven itself against the conventional techniques. By the direct atom counting of the radioactive carbon isotope, C-14, rather than the counting of the beta particles, any background is eliminated and microgram-sized samples of a solid graphite-like target can be analyzed in a few hours instead of many days. The IsoTrace laboratory has completed a comparative analysis with materials dated by the conventional method and has shown excellent agreement, yielding an accuracy better than 1% and a precision of 0.3%. For samples less than 10,000 years old, a precision of 1.0% is routinely obtained, while, for samples less than 2000 years old, precision of 0.3% is possible. Dates can also be routinely obtained from materials up to 50,000 years old. With the small sample size and high precision, greater resolution when dating recent materials may be obtained. Materials that previously proved impossible to date due to small sample size or the nature of the material (e.g. high value, weathering etc.) may now readily be subjected to scrutiny. Fragments, rather than bulk samples, may be dated, facilitating significant stratigraphicmore » resolution and correlation in a wide variety of situations.« less" @default.
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- W207315719 date "1985-01-01" @default.
- W207315719 modified "2023-09-24" @default.
- W207315719 title "Accelerator radiocarbon dating: new applications and capabilities" @default.
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