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Science 4 November 1977:
Vol. 198. no. 4316, pp. 508 - 510
DOI: 10.1126/science.198.4316.508
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Articles

Radiocarbon Dating Using Electrostatic Accelerators: Negative Ions Provide the Key

C. L. BENNETT 1, R. P. BEUKENS 2, M. R. CLOVER 3, H. E. GOVE 3, R. B. LIEBERT 4, A. E. LITHERLAND 5, K. H. PURSER 6, and W. E. SONDHEIM 3

1 Nuclear Structure Research Laboratory, University of Rochester, Rochester, New York 14627
2 Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7
3 Nuclear Structure Research Laboratory, University of Rochester
4 General Ionex Corporation, Ipswich, Massachusetts 01938
5 Department of Physics, University of Toronto
6 General Ionex Corporation

Mass spectrometric methods have long been suggested as ways of measuring 14C/12C ratios for carbon dating. One problem has been to distinguish between 14N and 14C. With negative ions and a tandem electrostatic accelerator, the 14N background is virtually absent and fewer than three 14C atoms in 1016 atoms of 12C have been easily measured.

Submitted on June 30, 1977
Revised on September 2, 1977


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