A Gamma Ray Detector is a device used to measure and identify gamma radiation, which is a form of high-energy electromagnetic radiation. These detectors are essential in various fields, including nuclear medicine, astrophysics, and radiation safety. They work by capturing gamma rays and converting their energy into measurable electrical signals. There are several types of gamma ray detectors, including scintillation detectors and semiconductor detectors. Scintillation detectors use materials that emit light when gamma rays interact with them, while semiconductor detectors rely on the properties of materials like silicon or germanium. Both types help scientists and safety professionals monitor radiation levels and ensure safety in environments where gamma radiation is present.