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An Evaluation of Shielding Characteristics Applicable to Mini-Gas Proportional-Counter-Based 14C Dating Systems

Published online by Cambridge University Press:  18 July 2016

Lauri Kaihola ,
Hannu Kojola ,
Henry Polach ,
Erkki Soini  and
Robert Otlet
Lauri Kaihola
Affiliation:
University of Turku, Department of Physical Sciences, Turku, Finland
Hannu Kojola
Affiliation:
Wallac Oy, Research Department, Turku, Finland
Henry Polach
Affiliation:
Radiocarbon Dating Research, Australian National University, Canberra
Erkki Soini
Affiliation:
Wallac Oy, Research Department, Turku, Finland
Robert Otlet
Affiliation:
Low Level Measurement Laboratory, AERE, Harwell, UK
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Abstract

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A mini-gas-proportional counter prototype of 10ml capacity (at NTP) was constructed of oxygen-free Finnish copper. The counter tube will be one of 16 equivalent tubes of a small-sample gas counting system, which is equipped with passive graded shield made of lead, cadmium, and copper and a dual active anticoincidence shield, consisting of an external cosmic gas-proportional and an internal plastic scintillation guard. The aim of this study was to evaluate the parameters leading to the design of a cost-effective and compact shielding package for mini-counters.

Type
V. General Aspects of 14C Technique
Information
Radiocarbon , Volume 25 , Issue 2: 11th International Radiocarbon Conference , 1983 , pp. 577 - 580
Copyright
Copyright © The American Journal of Science 

References

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