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Development and Operation of the Harwell Small Counter Facility for the Measurement of 14C in Very Small Samples

Published online by Cambridge University Press:  18 July 2016

R L Otlet ,
George Huxtable ,
G V Evans ,
D G Humphreys ,
T D Short  and
S J Conchie
R L Otlet
Affiliation:
Nuclear Physics Division, AERE Harwell, Oxfordshire, OX11 0RA United Kingdom
George Huxtable
Affiliation:
Nuclear Physics Division, AERE Harwell, Oxfordshire, OX11 0RA United Kingdom
G V Evans
Affiliation:
Nuclear Physics Division, AERE Harwell, Oxfordshire, OX11 0RA United Kingdom
D G Humphreys
Affiliation:
Nuclear Physics Division, AERE Harwell, Oxfordshire, OX11 0RA United Kingdom
T D Short
Affiliation:
Nuclear Physics Division, AERE Harwell, Oxfordshire, OX11 0RA United Kingdom
S J Conchie
Affiliation:
Nuclear Physics Division, AERE Harwell, Oxfordshire, OX11 0RA United Kingdom
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Abstract

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The Harwell system for measuring milligram size samples using Brookhaven miniature gas counters is fully operative. It comprises 12 counters of different sizes which operate simultaneously within a single NaI crystal (300mm diameter × 300mm long) acting as an anti-coincidence guard counter. Brief details are given of the construction and commissioning of the system, including counter assembly, shield design, electronics, data capture, data analysis, and chemical processing and filling procedures. The performance of the system and an overall view of the fields of application for which the counters have important applications are discussed.

Type
V. General Aspects of 14C Technique
Information
Radiocarbon , Volume 25 , Issue 2: 11th International Radiocarbon Conference , 1983 , pp. 565 - 575
Copyright
Copyright © The American Journal of Science 

References

Bruns, M, (ms), 1976, Gas chromatography with Radon-222, Doctoral thesis: Inst Environmental Physics, Univ Heidelberg.Google Scholar
Callow, WJ, Baker, MJ, and Pritchard, DH, 1963, National Physical Laboratory radiocarbon measurements I: Radiocarbon, v 5, p 34.CrossRefGoogle Scholar
Harbottle, G, Sayre, EV, and Stoenner, RW, 1979 Carbon-14 dating of small samples by proportional counting: Science v 206, p 683–685.CrossRefGoogle ScholarPubMed
Oona, H, and Fan, CY, 1977, A counter system for natural 14C measurements: Nuclear Instruments and Methods, v 143, p 391–397.CrossRefGoogle Scholar
Otlet, RL, 1968, Low-level tritium measurements for hydrological applications, in : Conf Publication No. 47, Institution of Electrical Engineers.Google Scholar
Otlet, RL, and Evans, GV, in press, Progress in the application of miniature gas counters to radiocarbon dating of small samples: in 14C and Archaeology Symposium, 1st, Proc: Gromingen, in press.Google Scholar
Sayre, EV, Harbottle, G, Stoenner, RW, Otlet, RL, Evans, GV, 1981, Small gas proportional counters for the carbon-14 measurement of very small samples, in Methods of Low Level Counting and Spectrometry: IAEA Vienna, p 393–407.Google Scholar
Srdoc, D, and Sliepcevic, A, 1963, Carbon dioxide proportional counters: effects of gaseous impurities and gas purification methods: Internatl Jour Appl Radiation Isotopes, v 14, p 68.Google Scholar
Wolfendale, AW, 1963, Cosmic Rays: London, Newnes, p 46.Google Scholar