Influence of the Superfluid Pairing Interaction on the Collective States in the Finite Temperature Random Phase Appoximation

摘要

A set of finite temperature RPA-equations is obtained within the framework of the quasiparticle-phonon nuclear model using the separable multipole interaction. The calculations have been performed for the isovector dipole and isoscalar quadrupole modes in sup(58)Ni. It is found that the centroids of the giant resonances undergo a bending in the critical temperature region where the collapse of the pairing gap takes place. 30 refs.; 3 figs.; 1 tab. (Atomindex citation 18:007804)