Binding energy

Discussion in 'Physics' started by logearav, Nov 24, 2011.

  1. logearav

    Thread Starter Member

    Aug 19, 2011
    248
    0
    Revered Members,
    Binding energy for lighter nuclei is large and for heavier nuclei BE is less. Why?
    I know BE is the energy needed to bind protons and neutrons in a nucleus. Also it can be defined as the energy that must be supplied to disrupt the nucleus into constituent protons and neutrons.
    Take a lighter nuclei which has 3 protons and so ideally the energy needed to bind these 3 protons should be less when compared with the energy needed to bind 82 protons(say) in a heavier nuclei . So, why BE is less for heavier nuclei than lighter nuclei?
     
  2. SPQR

    Member

    Nov 4, 2011
    379
    48
    HERE's a nice Wiki on 'binding energy' which shows a graph of binding energy versus nucleons, and there is an exponential increase up to about 60 nucleons, then a slow taper.
     
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