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[Temperature Dependence of Scintillation Survey Meter with and without Temperature Compensation Function]
Miku Furukawa1, Rio Isobe1, Saya Ono1
1Department of Radiological Technology, Faculty of Health Sciences, Tohoku University School of Medicine.
Nihon Hoshasen Gijutsu Gakkai Zasshi
|February 4, 2024
Summary
Scintillation survey meters with temperature compensation maintain stable dose rate measurements across varying temperatures. Uncompensated meters show significant decreases in readings as temperature rises, impacting accuracy.
Area of Science:
- Radiation detection and measurement
- Environmental monitoring instrumentation
- Nuclear physics instrumentation
Context:
- Precise radiation measurements are crucial in diverse environmental conditions.
- Scintillation survey meters are widely used for radiation detection.
- Temperature fluctuations can significantly affect instrument performance.
Purpose:
- To evaluate the temperature dependence of scintillation survey meters.
- To compare the performance of compensated versus uncompensated devices.
- To determine the impact of temperature on dose equivalent rate measurements.
Summary:
- A NaI(Tl) scintillation survey meter with temperature compensation (TCS-1172) demonstrated minimal variation in 1 cm dose equivalent rate (µSv/h) between 10°C and 40°C.
- Uncompensated NaI(Tl) and CsI(Tl) meters (TCS-171, PDR-111) exhibited temperature-dependent inaccuracies, with readings decreasing as temperature increased (up to -7.2%/10°C).
- The study utilized a controlled temperature range (10°C to 40°C) to assess meter performance.
Impact:
- Temperature-compensated scintillation survey meters ensure reliable and accurate radiation monitoring in variable climates.
- Uncompensated meters may underestimate radiation levels at higher temperatures, potentially leading to misjudgments in safety protocols.
- Findings inform the selection and application of radiation survey equipment for environmental and occupational safety.
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