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Open AccessArticle

Cerenkov Counter for In-Situ Groundwater Monitoring of 90Sr

Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, WA, 99352, USA
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Sensors 2005, 5(1), 51-60; https://doi.org/10.3390/s5010051
Received: 7 September 2004 / Accepted: 3 December 2004 / Published: 28 February 2005
(This article belongs to the Special Issue Sensors for Environmental Monitoring)
Groundwater contamination from 90Sr is an environmental challenge posed topresent and former nuclear weapons related sites. Traditional methods of extractinggroundwater samples and performing laboratory analyses are expensive, time-consumingand induce significant disposal challenges. The authors present here a prototype countercapable of measuring 90Sr groundwater concentrations in-situ at or below the drinking waterlimit of 8 pCi/liter. The 90Y daughter of 90Sr produces high-energy electrons, which cancreate Cerenkov light. Photomultiplier tubes convert the Cerenkov light into an electronicpulse, which then undergoes signal processing with standard electronics. Strontium-90concentrations near the drinking water limit can be measured in a matter of hours if it is insecular equilibrium with the 90Y daughter. The prototype counter is compact, can bedeployed in an American Standard 6-inch, well while operated by a single person, andtransmits the results to a central monitoring location. View Full-Text
Keywords: strontium-90; groundwater monitoring; Cerenkov light. strontium-90; groundwater monitoring; Cerenkov light.
MDPI and ACS Style

Runkle, R.C.; Brodzinski, R.L.; Jordan, D.V.; Hartman, J.S.; Hensley, W.K.; Maynard, M.A.; Sliger, W.A.; Smart, J.E.; Todd, L.C. Cerenkov Counter for In-Situ Groundwater Monitoring of 90Sr. Sensors 2005, 5, 51-60.

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