Error creating top menu, please contact system administrator. Error Message The Web application at could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application. Gamma
Skip Ribbon Commands
Skip to main content


Gamma rays are electromagnetic radiation with very short wavelengths, below 10 picometers, with energies above 100 keV. They can penetrate deep into human tissue and, for this reason are applied to a variety of medical fields. One such growing application is in nuclear medicine, where optical detectors equipped with scintillator crystals are used to detect gamma radiation emitted after a radioisotope dose has been administered to the patient.

Other areas where gamma radiation is used are in security - for container scanning - and in cancer treatment - gamma-knife surgery - where gamma rays are focused on eliminating the cancerous cells. Excelitas offers high performance detectors that can detect gamma radiation directly, or can be coupled to a scintillator crystal to detect very low levels of incoming radiation.

Excelitas is a leading supplier of optoelectronic sensors and modules that covers the entire electromagnetic spectrum, from Gamma rays all the way to the Far Infrared. Whether you are looking at visible photons for fluorescence measurements, long-wavelength infrared for motion sensing, gamma rays for nuclear medicine, or anything in-between, chances are we have the detector you are looking for.

Did You Know?

Gamma ray exposure is measured in cSv (centisieverst). The average dose per year naturally received from the environment in the United States is 0.36cSv/h. The above mentioned nuclear medicine scan will expose the body to only a fraction of this. The lethal dose for 50% exposed population is 500cSv/h, so almost 1400 times more than average exposure.