Enhancing sample preparation capabilities for accelerator mass spectrometry radiocarbon and radiocalcium studies
- California Univ., Riverside, CA (United States)
With support provided by the LLNL Accelerator Mass Spectrometry Laboratory, the UCR Radiocarbon Laboratory continued its studies involving sample pretreatment and target preparation for both AMS radiocarbon ({sup 14}C) and radiocalcium ({sup 41}Ca) involving applications to archaeologically -- and paleoanthropologically- related samples. With regard to AMS {sup 14}C-related studies, we have extended the development of a series of procedures which have, as their initial goal, the capability to combust several hundred microgram amounts of a chemically-pretreated organic sample and convert the resultant CO{sub 2} to graphitic carbon which will consistently yield relatively high {sup 13}C{sup {minus}} ion currents and blanks which will yield, on a consistent basis, {sup 14}C count rates at or below 0.20% modern, giving an 2 sigma age limit of >50,000 yr BP.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); California Univ., Riverside, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10104253
- Report Number(s):
- UCRL-CR-108120; ON: DE92003966
- Resource Relation:
- Other Information: PBD: 20 Aug 1991
- Country of Publication:
- United States
- Language:
- English
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