Estimating retrospective indoor radon concentrations with a new device

Area of Science:

• Environmental Science
• Radiological Health
• Nuclear Physics

Background:

• Radon-222 (222Rn) is a radioactive gas that decays into short-lived daughters.
• These daughters attach to dust particles and deposit on surfaces, eventually forming lead-210 (210Pb) and polonium-210 (210Po).
• Polonium-210 (210Po) emits alpha particles that can be detected on surfaces like glass.

Purpose of the Study:

• To present the design and construction of a novel device for measuring surface-deposited 210Po.
• To utilize this device for estimating retrospective radon concentrations.
• To validate the feasibility of surface-based alpha particle detection for environmental monitoring.

Main Methods:

• Development of a new device incorporating a silicon detector for 210Po measurement.
• Measurement of alpha particles emitted by 210Po deposited on various surfaces.
• Calculation of retrospective radon concentrations based on measured 210Po levels.

Main Results:

• Successful design and construction of the 210Po measurement device.
• Acquisition of preliminary measurement data from surfaces.
• Demonstration of the potential to estimate past radon levels using surface 210Po.

Conclusions:

• The developed silicon detector device is effective for measuring surface 210Po.
• This method offers a viable approach for retrospective radon concentration assessment.
• Surface alpha particle detection provides valuable insights into historical radon exposure.