A 222Rn source for low-background liquid scintillation detectors

Michael Johnson, Jay Benziger, Catherine Stoia, Frank Calaprice, Mark Chen, Nicholas Darnton, Fred Loeser, R. Bruce Vogelaar

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A technique for producing a radioactive source suitable for use in a low-background liquid scintillation detector is described. 222Rn was concentrated from air to prepare liquid scintillator sources spiked with 106 Bq/m3 of the radioisotope. Air was stripped of CO2 and water vapor, and passed over cooled charcoal which trapped the radon. The accumulated radon was desorbed and transferred into a pseudocumene-based scintillator. These sources have been used for position calibration in the Counting Test Facility (a 5 m3 spherical liquid scintillation detector) at the Laboratori Nazionali del Gran Sasso.

Original languageEnglish (US)
Pages (from-to)459-465
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
StatePublished - Sep 11 1998

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


  • Liquid scintillator
  • Radon


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