nnp FY2013 Annual Report 3.1 Figure 1

Fig.1 Functional form of the effective pair-potential has been plotted together with its short-attraction and long-repulsion part for specific parameter values indicated in (a). Note that the global minimum of the effective potential is followed by a positive energy barrier at finite distance from particle core. Increase in the energy barrier as a function increasing repulsion length is shown in (b).