What Is a Radiation Detector?

A sensor device, device, or material used to observe and study the microscopic phenomena of nuclear radiation and particles. The working principle of a radiation detector is based on the interaction of particles with matter.

The way in which radiation detectors give information is mainly divided into two categories: one is that after particles enter the detector, after a certain treatment, the information is acceptable to people's senses. For example, various particle track detectors are generally photographed, developed, or

A radiation detector for detecting the spatial distribution of incident radiation, comprising: a radiation-sensitive semiconductor

The main performance of a radiation detector is detection efficiency, resolution, linear response, and particle identification capability. A device that converts radiant energy into a measurable signal. The basic principle of the detector is that the radiation interacts with particles in the detection medium.

The ratio of the number of particles detected by the detector to the number of particles of that kind incident into the detector at the same time interval. It is related to the sensitive volume, geometry and sensitivity of the detector to incident particles. Detectors are generally required to have high detection efficiency. However, in some special occasions, such as under extremely strong radiation fields, the detector is required to have lower sensitivity. Refers to the ratio of the number of photon events and the number of incident photons during the initial process of photon and detector. It describes the ability of the detector to receive and record information. Incident photons may penetrate or be reflected by the medium. Sometimes the medium absorbs several photons to cause a photon event, and sometimes the generated photon event is not detected, so the quantum efficiency of a general detector is less than 1.

Energy resolution

Ability to resolve particles whose energies are very close

Certain types of detectors are only sensitive to certain types of incident particles, but not sensitive to other particles, or different forms of information are given depending on the type of incident particles. Eliminate other unnecessary nuclear radiation interference.

The development trend of nuclear radiation detectors is mainly as follows: Research on combined detectors and detection devices that can simultaneously provide various information such as the position, energy, and time of incident particles. Make full use of the new achievements of electronic technology and computer technology to improve the accuracy, speed and utilization of information for analysis and processing of the information provided by the detector. Microelectronic technology is promoting the emergence of miniaturized detectors. Seek more ideal detection medium and detection mechanism, and develop superconducting detectors.