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What exactly are resonances?

  1. Aug 22, 2007 #1
    what exactly are resonances? are they particles, energy,..?
     
  2. jcsd
  3. Aug 22, 2007 #2

    Astronuc

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    In what context?

    A reasonable description would be particles or particle systems in an excited (unstable) energy state.

    http://en.wikipedia.org/wiki/Resonance#Resonances_in_quantum_mechanics

    One can think of baryonic resonances - Lambda, Sigma, Delta, Xi, Omega particles - http://hyperphysics.phy-astr.gsu.edu/hbase/particles/baryon.html
    http://en.wikipedia.org/wiki/List_of_baryons

    Or nuclear resonances with respect to neutron absorption cross-seciton.
     
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