Studies Towards a Method for Radiocalcium Dating of Bones

We made preliminary AMS measurements of 41Ca/Ca ratios in bone and limestone specimens with the Argonne Tandem-Linac Accelerator System (ATLAS). We were able to avoid pre-enrichment of 41Ca used in previous experiments due to a substantial increase in Ca-beam intensity. Most of the measured ratios l...

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Veröffentlicht in:	Radiocarbon 1989, Vol.31 (3), p.311-323
Hauptverfasser:	Kutschera, Walter, Ahmad, Irshad, Billquist, P J, Glagola, B G, Furer, Karen, Pardo, R C, Paul, Michael, Rehm, K E, Slota, P J, Taylor, R E, Yntema, J L
Format:	Artikel
Sprache:	eng
Schlagworte:	550101 - Behavioral Biology- Tracer Techniques AGE ESTIMATION ALKALINE EARTH ISOTOPES ANTHROPOLOGY ARCHAEOLOGICAL SPECIMENS B. Accelerator Mass Spectometry BASIC BIOLOGICAL SCIENCES BETA DECAY RADIOISOTOPES BODY CALCIUM 41 CALCIUM ISOTOPES ELECTRON CAPTURE RADIOISOTOPES EVEN-ODD NUCLEI FOSSILS I. Sample Preparation and Measurement Techniques INTERMEDIATE MASS NUCLEI ISOTOPE APPLICATIONS ISOTOPE DATING ISOTOPES NUCLEI ORGANS RADIOISOTOPES SKELETON TRACER TECHNIQUES YEARS LIVING RADIOISOTOPES
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Zusammenfassung:	We made preliminary AMS measurements of 41Ca/Ca ratios in bone and limestone specimens with the Argonne Tandem-Linac Accelerator System (ATLAS). We were able to avoid pre-enrichment of 41Ca used in previous experiments due to a substantial increase in Ca-beam intensity. Most of the measured ratios lie in the 10-14 range, with a few values below 10-14. In general, these values are higher than the ones observed by the AMS group at the University of Pennsylvania. We discuss possible implications of these results. We also present the current status of half-life measurements of 41Ca and discuss 41Ca production processes on earth.
ISSN:	0033-8222 1945-5755
DOI:	10.1017/S0033822200011851