Performance characteristics of radiation detectors
The main performances of radiation detectors are detection efficiency, resolution, linear response, and particle discrimination ability. A device that converts radiant energy into a measurable signal. The basic principle of the detector is that the radiation interacts with the particles in the detection medium, transfers all or part of the energy to the particles in the medium, and causes a macroscopically measurable reaction under certain external conditions. For the optical band, radiation can be regarded as a photon beam, the energy of the photons is transferred to the electrons in the medium, and a so-called photon event is generated, and the radiation energy is converted into thermal energy (such as thermocouple), electrical energy (such as photocurrent and photovoltage), chemical energy (photosensitive formation of silver particles in latex), or radiation of another wavelength (fluorescence effect). According to these energies and radiation, various devices are designed to measure the radiant energy of celestial bodies.
