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Pacific Northwest National Laboratory has developed a technology that uses light rather than heat to read the amount of radiation measured by a dosimeter.

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Document Title: Optically Stimulated Luminescence
Category: Health-Related Research and Technologies
Media Type: Photos
Date of Image/Photo: November 1990
Background: With optically stimulated luminescence, a tiny crystal traps and stores energy from exposure to ionizing radiation fields. The amount of exposure can be determined by shining a green light on the crystal and measuring the intensity of the blue light emitted. This technology allows for less expensive, instantaneous readings that can be repeated, as opposed to traditional dosimeters which take 20 or 30 seconds for a one-time-only reading.
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/SMAA-49MU73

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