Isovector energy-weighted sums for hot nuclei in presence of relaxation processes

2008/07/07 by V. M. Kolomietz, Kolomietz, V. M., S. V. Lukyanov +3
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Optical properties and cooling technologies in crystalline materials

paper · pdf · doi:10.48550/arxiv.0807.1033

openalex publication_date 2008/07/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the collective response function and the energy-weighted sums m_k for isovector mode in hot nuclei. The approach is based on the collisional kinetic theory and takes into consideration the temperature and the relaxation effects. Taking into account a connection between the isovector sound mode and the corresponding surface vibrations we have established the A-dependence of the enhancement factor for the isovector sum rule in a good agreement with experimental data. We have shown that the enhancement factor for the "model independent" sum m₁ is only slightly sensitive to the temperature change.

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