UV detectors utilize which two detection principles?

UV detectors utilize which two detection principles?

• A. Solid-state device and gas-filled tube
• B. Photomultiplier tube and scintillator
• C. Ionization chamber and thermal sensor
• D. Resistance thermometer

Answer: (A)

UV detectors are built around two main ways to sense light: solid-state photodetectors and gas-filled ionization detectors. In solid-state devices, UV photons are absorbed by a semiconductor junction (like a silicon photodiode), which directly converts the light into an electrical signal. In gas-filled tubes, UV photons ionize the gas inside the tube, and the resulting charges are collected to produce a detectable current. These two approaches—solid-state and gas-filled—cover the primary, distinct detection principles used for UV sensing, which is why that option is the best fit.

UV detectors are built around two main ways to sense light: solid-state photodetectors and gas-filled ionization detectors. In solid-state devices, UV photons are absorbed by a semiconductor junction (like a silicon photodiode), which directly converts the light into an electrical signal. In gas-filled tubes, UV photons ionize the gas inside the tube, and the resulting charges are collected to produce a detectable current. These two approaches—solid-state and gas-filled—cover the primary, distinct detection principles used for UV sensing, which is why that option is the best fit.