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fast neutron |
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fast neutron [¦fast ′nü‚trän] (nucleonics) A neutron having energy much greater than some arbitrary lower limit (that may be only a few thousand electronvolts). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Originally designed for charged particle detection and later modified for fast neutron detection, the MicroMegas detector concept has proven capable of processing a high charged particle rate with relatively fast recovery times to minimize dead time. The company's possible breakthrough, the Pulsed Fast Neutron Analysis machine, shoots neutrons into containers to determine which chemical substances are present, in addition to tracing objects' shapes the way X-rays do. Because fast neutrons, the type emitted by nuclear reactions, are particularly difficult to trap and measure, dosimeters first use a "moderator"--something containing hydrogen--to interact with them and "slow" them down. |
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