Landau damping and one-body dissipation in nuclei
Journal Article
·
· Ann. Phys. (N.Y.); (United States)
In the framework of the theory of Fermi liquids, the wall formula describes a type of Landau damping of the collective motion. It is found that in this model the ratio between width and energy of the nuclear giant resonances is of the order of 1, essentially independent of the multipolarity. This result, which is in contradiction with the experimental findings, is due to the fact that the boundary is externally imposed. With the exception of the compression modes, the Landau damping is not the appropriate process for describing the damping of the low-multipole giant resonances, being however very effective for deformations corresponding to high multipolarities (a modified wall formula predicts overdamping to occur at lambda -- 7).
- Research Organization:
- Departamento de Fisica, Universidade de Coimbra, P-3000 Coimbra, Portugal
- OSTI ID:
- 5140915
- Journal Information:
- Ann. Phys. (N.Y.); (United States), Journal Name: Ann. Phys. (N.Y.); (United States) Vol. 171:1; ISSN APNYA
- Country of Publication:
- United States
- Language:
- English
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