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Published January 1, 2015 | public
Journal Article

Laboratory studies on the removal of radon-born lead from KamLAND's organic liquid scintillator


The removal of radioactivity from liquid scintillator has been studied in preparation of a low background phase of KamLAND. This paper describes the methods and techniques developed to measure and efficiently extract radon decay products from liquid scintillator. We report the radio-isotope reduction factors obtained when applying various extraction methods. During this study, distillation was identified as the most efficient method for removing radon-born lead from liquid scintillator.

Additional Information

© Elsevier B. V. Received 11 February 2014, Revised 14 July 2014, Accepted 16 September 2014, Available online 28 September 2014. This work was supported in part by the U.S. Department of Energy (DOE) grant DE-FG02-01ER41166, the Japanese Ministry of Education, Culture, Sports, Science and Technology, the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan, DOE contract number DE-AC02-05CH11231, and other DOE grants from individual KamLAND institutions. The authors would like to thank Dr. Li Cang of Selecto Scientific Inc., and Xiong Xin Dai and Nick Jelly (Oxford University) of the SNO collaboration.

Additional details

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October 18, 2023