Which type of detector is most commonly used in industrial radiography survey meters?

In industrial radiography, the most commonly used detector is the ionization chamber. This type of detector is known for its ability to accurately measure high levels of radiation exposure, which is often encountered in industrial settings. Ionization chambers work by measuring the charge produced when ionizing radiation passes through a gas-filled chamber. The resulting ionization creates pairs of ions, and the amount of charge collected is directly proportional to the radiation exposure.

One of the significant advantages of ionization chambers is their range and sensitivity when measuring higher radiation levels, making them particularly effective for monitoring exposure in environments such as industrial radiography. They have a relatively quick response time and the ability to provide reliable dose rate measurements, which are crucial for safety in industrial applications.

While Geiger-Müller detectors are also used in various applications, they are more suited for lower radiation levels and are less effective at higher doses. Scintillation detectors, known for their sensitivity to low levels of radiation, are typically used in different scenarios, including environmental monitoring rather than for the robust demands of industrial settings. Photomultiplier tubes, while essential in certain detection setups, are not standalone detectors and instead are components that amplify signals from scintillation detectors.

Therefore, the ionization chamber is the preferred choice