Different types of detectors are used for detecting gamma rays. One common method is called scintillation, which involves turning the energy of the gamma ray into visible light. The other common method, used by solid state semiconductors, creates electron/hole pairs that converts the energy of gamma rays into electricity.

High purity germanium detectors stand out as the most commonly used solid state detector material when high energy-resolution is needed.

Gamma rays are emitted in nuclear processes like radioactive decay and reactions, as well as by cosmic sources such as stars, neutron stars, and black holes. Measuring gamma rays within our solar system helps identify their origins and elemental composition. Gamma ray detectors work by counting photons and measuring their energy, which indicates the element and isotope, while the number of counts reflects the abundance of the radioactive source.

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