Optically Stimulated Luminescence (OSL)

The OSL dosimeter provides a new degree of sensitivity by giving an accurate reading as low as 1 mrem for x-ray and gamma ray photons with energies ranging from 5 keV to greater than 40 MeV. The OSL dosimeter’s maximum equivalent dose measurement for x-ray and gamma ray photons is 1000 rem. For beta particles with energies from 150 keV to in excess of 10 MeV, dose measurement ranges from 10 mrem to 1000 rem. Neutron radiation with energies of 40 keV to greater than 35 MeV has a dose measurement range from 20 mrem to 25 rem. In diagnostic imaging the increased sensitivity of the OSL dosimeter makes it ideal for monitoring employees working in low-radiation environments and for pregnant workers.

OSL is used in at least two different applications:

  • Optical dating of ancient materials: mainly geological sediments, but also sometimes fired pottery, bricks etc., although in the latter case thermoluminescence dating is used more often
  • Radiation dosimetry, which is the measurement of accumulated radiation dose in the tissues of health care, nuclear, research and other workers, as well as in building materials in regions of nuclear disaster


Using Optically Stimulated Luminescence (OSL) technology, Dosimetry Service assures that your dose reports are on time and accurate.


InLight® Complete Dosimetry System Solution: Auto 200 Dosimetry Reader

The Auto 200 reader works with the InLight Complete Dosimetry System Solution, a solution for onsite dosimetry using LANDAUER’s optically stimulated luminescence (OSL) technology. The system is scalable, and can be configured to complement your current dosimetry program, or can enable you to maintain your own in-house accredited dosimetry program.