Binding energy

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

  1. logearav

    Thread Starter Member

    Aug 19, 2011
    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


    Nov 4, 2011
    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.