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The Development of Practical Systems for 14C Measurement in Small Samples Using Miniature Counters

Published online by Cambridge University Press:  18 July 2016

R L Otlet ,
George Huxtable  and
D C W Sanderson
R L Otlet
Affiliation:
Atomic Energy Research Establishment, Harwell, UK
George Huxtable
Affiliation:
Atomic Energy Research Establishment, Harwell, UK
D C W Sanderson
Affiliation:
Paisley College of Technology, Paisley, Scotland
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Abstract

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Miniature gas counters have been in use since the early 1960s for the measurement of 14C but were for a long time seen as suitable for providing approximate indications of activity rather than measurements for more precise dates. In recent years the need for better measurements of small samples has posed a continuing challenge for the 14C laboratories. This paper examines how the challenge has been met across the world using conventional beta decay counting techniques and proportional gas counters of 50ml volume or less. A survey is made of the rise of these techniques and attention paid to the solution through modern technology of earlier problems. Some practical systems, now in routine use, are described and consideration is given to the future for miniature counter measurements. Such systems have several attractive features that will guarantee their usefulness in 14C measurements for the future.

Type
V. Conventional Techniques
Information
Radiocarbon , Volume 28 , Issue 2A , 1986 , pp. 603 - 614
Copyright
Copyright © The American Journal of Science 

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