Naslov
Finite temperature effects on monopole and dipole excitations

Autori
Niu, Y. F ; Paar, Nils ; Vretenar, Dario ; Meng, J

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

Izvornik
International Nuclear Physics Conference 2010 (INPC2010) ; Journal of Physics: Conference Series ; Volume 312 / Jens Dilling - Bristol : Institute of Physics Publishing, 2011

Skup
International Nuclear Physics Conference 2010 (INPC2010)

Mjesto i datum
Vancouver, Kanada, 04.07.2010. - 09.07.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
giant resonances; hot nuclei

Sažetak
The relativistic random phase approximation based on effective Lagrangian with density dependent meson-nucleon couplings has been extended to finite temperature and employed in studies of multipole excitations within the temperature range T = 1 − 2 MeV. The model calculations showed that isoscalar giant monopole and isovector giant dipole resonances are only slightly modified with temperature, but additional transition strength appears at low energies because of thermal unblocking of single-particle orbitals close to the Fermi level. The analysis of low-lying states shows that isoscalar monopole response in 132Sn results from single particle transitions, while the isovector dipole strength for 60Ni, located around 10 MeV, is composed of several single particle transitions, accumulating a small degree of collectivity.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA