Naslov
Self-consistent models for the collective excitation phenomena in exotic nuclei

Autori
Paar, Nils ; Niksic, Tamara ; Papakonstantinou, Panagiota ; Ring, Peter ; Vretenar, Dario

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS: FINUSTAR, American Institute of Physics Conference Proceedings 831 / S. V. Harissopulos, P. Demetriou, R. Julin - , 2006, 70-74

Skup
International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions - FINUSTAR

Mjesto i datum
Kos, Grčka, 12.09.2005. - 17.09.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
pygmy resonances; giant resonances; QRPA; relativistic mean field

Sažetak
Multipole excitation phenomena in exotic nuclei are investigated within the framework of the fully self-consistent Relativistic Quasi-particle Random-Phase Approximation (RQRPA) based on the Relativistic Hartree-Bogoliubov (RHB) model with density dependent meson-nucleon couplings, and finite-range Gogny interaction to account for the pairing correlations. The RHB+RQRPA study of nuclei towards the proton drip-line indicates the appearance of an exotic collective excitation mode: the proton pygmy dipole resonance, due to oscillations of loosely bound protons against the rest of nucleons. The continuum RPA using Skyrme interactions is employed in a study of doubly magic $^{;48};$Ni, resulting in a rather broad distribution of the low-lying dipole strength, due to the coupling to the continuum.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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