Lecture4 - ENU 4612C/5615C Nuclear Radiation Detection and...

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Unformatted text preview: ENU 4612C/5615C Nuclear Radiation Detection and Instrumentation Lecture 4 Radiation Interactions (3) 4. Interaction of Neutrons Slow Neutrons (E < 0.5 eV) Elastic Scattering too little energy to be used as a detection technique Neutron-induced nuclear reactions: Radiative Capture (n, ) inconvenient secondary radiation for a detection technique Charged Particle Production Reaction (n, p); (n, ); (n, fission) Fast neutrons (E > 1 keV) Elastic Scattering partial energy transfer to recoil nucleus the neutrons are moderated. The most efficient moderator is hydrogen. Inelastic Scattering high energy neutrons only leads to excited recoil nucleus that de-excites emitting gamma-rays Other Reactions generally impractically low cross sections for (n, p), (n, ) 4. Interaction of Neutrons Slow (Thermal) Neutrons Reactions yielding charged particles: Li n B 7 10 ) , ( H n Li 3 6 ) , ( H p n He 3 3 ) , ( ) , ( fission n X 4. Interaction of Neutrons Slow (Thermal) Neutrons Reactions Yielding Charged Particles: Conservation of energy: Conservation of momentum: Li n B 7 10 ) , (...
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This note was uploaded on 12/10/2011 for the course ENU 4612c taught by Professor Ghita during the Fall '11 term at University of Florida.

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Lecture4 - ENU 4612C/5615C Nuclear Radiation Detection and...

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