In gamma spectroscopy, a semiconductor detector measures:

In gamma spectroscopy, a semiconductor detector is utilized to precisely measure photon energies emitted from radioactive sources. When gamma photons interact with the semiconductor material, they create electron-hole pairs. This process generates an electric signal that can be processed to determine the energy of the incoming photon based on its interaction with the detector. The energy spectrum that results from this measurement provides detailed information about the isotopes present in a sample, as different isotopes emit gamma radiation at characteristic energies.

The focus on photon energies allows researchers and professionals to identify and quantify different radioactive materials in a sample. This capability is essential for applications in nuclear medicine, radiation safety, and environmental monitoring, among others. Understanding the energy of gamma rays is critical for accurate characterization of materials and making informed decisions regarding safety and handling of radioactive substances.