Surface instability of a nuclear fermi liquid drop

A mechanical instability of an incompressible Fermi liquid drop with respect to surface distortions is considered. It is shown that the Fermi surface distortion (FSD) reduces the instability-growth rate for surface fluctuations due to its effects on both the viscosity and the increase in the stiffness coefficient. The dependence of the limiting temperature T_lim on the mass number and the multipolarity of the nuclear-surface distortion is calculated. It is shown that T_lim is not influenced by the FSD effect.