A finite temperature extension of the interacting boson model is developed and applied to the calculation of the collective partition function of transitional even-even Sm isotopes. The effective boson number decreases with increasing temperature, leading to a natural damping of collectivity. Positive and negative parity contributions to the boson partition function are computed and compared to rotational and vibrational enhancement factors comrnonly used in the generalized superfluid model.
|Titolo:||Collective Degrees of Freedom in Nuclear Densities|
|Data di pubblicazione:||7-ott-2001|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|