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The terrible events of September 11 ushered in a new awareness of the need for vigilance in protecting our nation from terrorist threats. We must especially guard against attempts to smuggle radioactive material into the U.S. via our airports and seaports. This past year, Berkeley Lab engineers contributed to homeland security by helping to develop a hand-held, extremely sensitive detector called "Cryo3" which can locate and identify the photons emitted from radioactive isotopes. Another team developed a portable device that uses neutrons to detect both radioactive and explosive materials.
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Homeland Security Gets High-Tech Help