CHANGE IN THE NUCLEAR MOMENT OF INERTIA AT THE NUMBER OF NEUTRONS N=98 AND ISOTOPIC SHIFT OF ATOMIC LEVELS

From analysis of experimental data on nuclear rotation, it is found th at the so-called rigid-body value of the nuclear moment of inertia and the nuclear-radius values associated with the moment of inertia as fu nctions of the number of nucleons change their behavior at the number of neutrons N = 98. This phenomenon is confirmed by experimental data on the isotopic shifts of atomic levels.