Abstract
Within the dissipative nuclear fluid-dynamics, the predictions are presented for the widths of Mλ, T=0 twist and E1, T=0 torus resonances associated with the longwavelength transverse vibrations of a nucleon flow. The macroscopic damping mechanism is presumed to be originated from the individual nucleon collisions with each other resulting in the shear viscosity. The collisional width of magnetic twist resonance as a function of mass number and multipole degree is found to be γ(Mλ)≈6(2λ+3)(λ−1) A−2/3 MeV. The width of the dipole torus mode is given by Γ tor (E1, T=0)≈130 A −2/3 MeV .
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