On the semiclassical description of currents in normal and superfluid rotating nuclei

First the technique of partial M-resummation is used to obtain semiclassical current distributions of slowly rotating normal fluid nuclei. We find that the average intrinsic current flows mainly in the nuclear surface. The analogy with the Bohr-van Leeuven theorem of diamagnetism is pointed out. Strutinsky- and temperature-averaged calculations are in good agreement with the semiclassical results. Secondly we study rotating superfluid nuclei and find in semicalssical aopproximation analytic closed expressions for the currents using a deformed harmonic oscillator potential. The currents pass with increasing gap continuously from rigid rotation flow to irrotational flow patterns. Analogous results hold true for the moment of inertia. For a fixed value of the gap our formulas for the moment of inertia interpolate smoothly between irrotational flow and rigid body values as a function of deformation