On the elimination of the afterglow of CsI(Tl) scintillation detector

Z. B. Alfassi, Y. Ifergan, U. Wengrowicz, Marcelo Weinstein

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The use of CsI(Tl) in survey meters is limited to low dose-rate fields due to the afterglow effect, which can take up to 20 min in case of 120 s exposure to 4 R/h field. Even mixtures of low and high dose-rate fields are prohibited since the afterglow effect of the high dose-rate field prevents the use of the meter in the low dose-rate field. It was found that heating the scintillation detector to 60 °C shortened considerably the time of the afterglow effect to 3 s, even after exposure of 120 s to fields of 4 R/h. It is suggested to start heating the detector immediately when reaching high dose-rate field and adjusting the calibration to the measured temperature.

Original languageEnglish
Pages (from-to)585-588
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
StatePublished - 21 Jul 2009


  • Afterglow
  • Scintillators
  • Temperature effect

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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