Excitation of collective Μλ, T = 0 modes of the orbital nature by inelastically scattered electrons

The quantum-macroscopic nuclear theory, the nuclear fluid dynamics, interprets the isoscalar magnetic collective excitations of the orbital nature as a manifestation of differential rotational (torsional) vibrations of a nucleus. In this paper, analytical expressions and numerical estimates are presented for centers of energy localization, total excitation probabilities and magnetic oscillator strengths, computed as functions of atomic and mass numbers and multipole degree. The explicit forms are given for collective transition currents and form factors obtained in the Plane Wave Born Approximation. Theoretical predictions are compared with data available on excitation of 2- collective modes in spherical nuclei by inelastically scattered electrons. (author). 55 refs., 6 figs., 1 tab