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The Sunna Dosimeter(tm) is a small, plastic wafer that is being marketed to accompany food products during irradiation (cold pasteurization). The dosimeter ensures that products receive doses within regulatory requirements. Shining blue light on the irradiated dosimeter induces it to emit red light (fluorescence). The intensity of the red provides the dose value that the food received, with a high degree of accuracy. Cold pasteurization destroys pathogens like E. coli and Listeria. Cold-pasteurized hamburger and chicken, as well as some produce, will be available in a limited number of supermarkets soon, and are expected to be readily available to consumers in the next few years.

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Document Title: Sunna Dosimeter(tm)
Category: Agricultural Research
Media Type: Photos
Date of Image/Photo: March 2000
Background: The founders of Sunna Systems Corporation are Pacific Northwest National Laboratory (PNNL) and former PNNL staff members Steve Miller and Alex Fassbender, who started the company in 1997 under the Entrepreneurial Leave-of-Absence program. The Sunna Dosimeter is based on technology they developed at PNNL, Optically Stimulated Luminescence (OSL). OSL measures radiation in dosimeters and other thermoluminescent materials using light at or below room temperature. Dosimeters can be re-read, and a variety of packaging is possible.
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/SMAA-4H7NTC

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