Semiclassical inertia of nuclear collective dynamics |
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Authors: | A G Magner A M Gzhebinsky S N Fedotkin |
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Institution: | (1) Institute for Nuclear Research, Kyiv, Ukraine |
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Abstract: | For the low-lying collective excitations in nuclei, the transport coefficients, such as the stiffness, the inertia, and the
friction, are derived within the periodic-orbit theory in the lowest orders of semiclassical expansion corresponding to the
extended Thomas—Fermi approach. The multipole vibrations near the spherical shape are described in the mean-field approximation
through the infinitely deep square-well potential and Strutinsky averaging of the transport coefficients. Owing to the consistency
condition, the collective inertia for sufficiently increased particle numbers and temperatures is substantially larger than
that of irrotational flow. The average energies of collective vibrations, reduced friction, and effective damping coefficients
are in better agreement with experimental data than those found from the hydrodynamic model.
The text was submitted by the authors in English. |
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