What type of detector uses the scintillation process to detect radiation?

The scintillation process is a method used to detect radiation by converting the energy from incident radiation into visible light. In scintillator detectors, the scintillation material absorbs the radiation and re-emits the energy in the form of light photons, which can then be detected and measured.

Scintillator detectors are specifically designed to exploit this process effectively. They typically consist of a scintillating crystal or other materials that exhibit this property when radiation passes through them. The emitted light is then captured, usually by a photomultiplier tube or another light-sensitive device, and the amount of light is proportional to the energy of the incoming radiation.

The other options were valid detectors used in radiation detection, but they employ different detection principles. For instance, a Geiger-Mueller counter detects radiation through ionization of gas, while a liquid scintillator uses the same scintillation process but typically for specific applications, such as in neutron detection or certain types of spectroscopy. Friskers are handheld devices designed primarily for surveying and detecting surface contamination but do not use the scintillation process as their main detection principle.