Which device is characterized as a continuous RDP monitor?

The choice of surface barrier detectors as a continuous RDP (radon decay product) monitor is based on their ability to provide real-time measurements of radon decay products within the environment. Surface barrier detectors are designed to detect alpha particles emitted by radon decay products, offering continuous monitoring capabilities.

These devices utilize a thin layer of semiconductor material that is sensitive to ionizing radiation, allowing for the detection of very low levels of radiation with high efficiency. This continuous monitoring is essential for understanding fluctuations in radon levels and their potential health impacts, making these detectors particularly valuable in radon assessment and mitigation strategies.

In contrast, the other devices mentioned typically do not function as continuous monitors for RDP. Electret ion chambers measure average radon levels over a period and are not designed for continuous monitoring; pulsed ion chambers often require specific conditions and are not continuously active; and liquid scintillation devices, while capable of detecting low levels of radiation, are generally used for different applications and do not offer the same continuous measurement capabilities as surface barrier detectors.