Stability of a Charged Small Particle Against Surface Shape Fluctuations
On the basis of a local density functional theory (LDF), surface shape effect on the total energy of a charged small particle is discussed. The electron density profile is assumed to be of Fermi’s distribution function type and the positive background is assumed to be a uniform jellium. The total energy is written by the normal coordinate of a surface shape deformation parameter. Thus the stability of a charged small particle against surface shape fluctuations is treated, and the mechanism of the Coulomb explosion is shown from this viewpoint.
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