#radiation/detection-and-imaging primarily sourced from [[@knollRadiationDetectionMeasurement2010]] # Types of Radiation Detectors MOC ## Gas-Filled Detectors These detectors operate as a chamber filed with a gas, while operating with some kind of applied voltage. When a charged particle passes through the gas, it transfers some of its energy to the gas, creating ionizations or excitations - [[Ionization Chambers]] - [[Proportional Counters]] - [[Geiger-Mueller Tubes]] ## Scintillation Detectors (Scintillators) These detectors, as their name implies, emit a characteristic scintillation light when interacted with by a charged particle or gamma ray. Ideally, these detectors should be transparent to their own light emissions among others. - [[Organic Scintillators]] - [[Inorganic Scintillators]] ## Semiconductor Detectors These solid-state detectors generate electron-hole pairs as a result of an interaction with ionizing radiation with energies great enough to jump the [[Band Gap]] intrinsic to the semiconductor. Because of the countable amount of information carriers generated via the electron-hole pairs, these detectors can offer very high resolution for many different metrics. These types of detectors are the bulk of my research. - [[High-Purity Germanium Detectors]] - [[CdZnTe (CZT) Detectors]] - [[Perovskites]] ### Notes Relevant to Semiconductor Radiation Detectors - [[n-type semiconductors]] and [[p-type semiconductors]] - [[Holes Do NOT Generate Signal in Pixelated CZT Detectors, the Cathode Signal Comes from the Electrons Moving Away From the Cathode]]