Abstract
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 language | English |
|---|---|
| Pages (from-to) | 585-588 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 606 |
| Issue number | 3 |
| DOIs | |
| State | Published - 21 Jul 2009 |
Keywords
- Afterglow
- Scintillators
- Temperature effect
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
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