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Low-Level Liquid Scintillation Counting in An Underground Laboratory

Published online by Cambridge University Press:  18 July 2016

Ulrich Schotterer  and
Hans Oeschger
Ulrich Schotterer
Affiliation:
Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
Hans Oeschger
Affiliation:
Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
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Abstract

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A commercial liquid scintillation counter (LSC) was tested for its ability of low level counting (LLC) in two underground laboratories (70m of water equivalent cover). Reduction of total background and background components compared to the normal counting laboratory (5m w.e. cover) up to a factor of 9 depending on the energy range and the shielding of counting cell and laboratory walls were obtained. First experiments with a large volume cell (50cc) led to a modern 14C net effect of 425cpm and a corresponding background of 1.6cpm.

Type
Techniques
Information
Radiocarbon , Volume 22 , Issue 2 , 1980 , pp. 505 - 511
Copyright
Copyright © The American Journal of Science 

References

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Neftel, A, 1976, Zum Nulleffekt im Tieflabor: Lizentiatsarbeit, Univ Bern.Google Scholar