Proton binding energy

The proton binding energy of 21Ne, 13.0 MeV, is greater than in any heavier stable odd-A nucleus. 

The 22Ne proton binding energy is greater than in any heavier stable nucleus. When one considers the total numbers of excess neutrons (the number in excess of the number of protons) within the total natural abundances, 22Ne contains morethan any other isotopic abundance except5 6 Fe. Thetotal number of excess neutrons (two per atom) contained in the solar abundance of 22Ne is almost half of the solar abundance ofsilicon. 

The proton binding energy 11.13 MeV is the largest of any odd-A nucleus since 29Si. 

Vetrivel, Catlow and Colbourn. A small cluster treated explicitly by ab initio molecular orbital methods was embedded in an 82-ion point ion block chosen so that the Madelung potential and electric field reproduced those from static lattice calculations. The effect of aluminium substitution on the proton binding energy was determined, and found to be stronger than when Al was present in the framework. 

Spin and isotopic spin assignments for the B levels above the proton binding energy are suggested by analysis of the radiative transitions in the py) reaction and by comparison with Be . They are supported by analysis of the Be ( ) scattering resonances. 

The 8.87 MeV state and several others of higher energy have been observed in the inelastic scattering of IQMeV protons by 0 (Hornyak and Sherr ). The level spectrum above 7.2 MeV and below the proton binding energy, has also been surveyed by the scattering of alpha particles by an only... 

The levels are obtained from the (dn), (pp ) and (nn ) reactions below the proton binding energy, and above this energy from the resonant reactions of protons with phosphorus. No accurate studies of the cascade radiations m the (py) reaction have been made, but some spin assignments for resonance levels are available [33]. 

Fig. 4. Decay of compound nucleus in relation to the neutron and proton binding energies of the residual nucleus.

Kormornicki A and Dixon DA (1992) Accurate proton affinities ab initio proton binding energies for N2, CO, CO2, and CH4. Journal of Chemical Physics 97t 1087-1094. 

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