Which of the following is NOT a type of radiation detector used for monitoring?

The thermographic camera is not considered a type of radiation detector used for monitoring ionizing radiation. Instead, it measures temperature variations by detecting infrared radiation emitted by objects, making it useful in a different context, such as identifying heat loss in buildings or monitoring overheating electrical equipment.

In contrast, the other options are well-established types of radiation detectors specifically designed to monitor various forms of ionizing radiation. The Geiger-Müller counter is widely used for detecting and measuring beta and gamma radiation. Scintillation detectors use materials that emit light when they interact with radiation, providing a means to measure high-energy particles and gamma rays. Ionization chambers measure the charge produced by ionizing radiation in a gas-filled chamber, providing quantitative data on radiation levels.

Identifying the unique functions and capabilities of these devices highlights the specific applications they serve in radiation monitoring, emphasizing the distinction between the thermographic camera and the other radiation detection tools.