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Scintillating glass optical fibers are the first viable medium for large-area, solid-state, thermal neutron sensors that have applications in national security, medicine, and materials research. Here, ultraviolet-induced fluorescence mimics scintillation.

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Document Title: Fiber Optic Sensor
Category: Economic Development and Technology Commercialization
Media Type: Photos
Date of Image/Photo: 1994
Background: PUMA is a unique radiation sensor comprised of lightweight, flexible glass fibers that provides portable, real-time measurements of neutrons and gamma rays. Originally called PUMA for plutonium measurement and analysis, the sensor is both more flexible and rugged than rigid gas tube sensor technology. The fibers transmit light to indicate various levels of radiation and can be embedded in a variety of materials or wrapped around objects of various shapes to analyze contents. The technology is adaptable to a wide range of applications, from environmental restoration and nonproliferation to cancer treatment. PUMA has been licensed to Canberra Industries of Meriden, Connecticut. PUMA won 1999 R&D 100 and Federal Laboratory Consortium (FLC) Awards.
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/SMAA-4A2LHT

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