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La Jolla Natural Radiocarbon Measurements II∗

Published online by Cambridge University Press:  18 July 2016

Carl L. Hubbs
Affiliation:
University of California, San Diego
George S. Bien
Affiliation:
University of California, San Diego
Hans E. Suess
Affiliation:
University of California, San Diego
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Since the publication of the last list of C14 measurements (La Jolla I), covering the period from mid-1957 through 1959, the La Jolla Radiocarbon Laboratory has continued to use essentially the same technique. In the summer of 1961 a second Oeschger-Houtermans counter (Houtermans and Oeschger, 1958), purchased from Manufacture Belge de Campes et de Matériel Electronique, S. A., was installed. It has a somewhat higher background (3.1 counts/min at a filling pressure of 880 mm) than the counter obtained from Bern—a point of little significance in the measurements herein reported. Of the tests included in this report only those following LJ-380 were run with the new counter; the others, with the Bern counter.

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Research Article
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Copyright © The American Journal of Science