RPA and QRPA calculation for low lying states in 96Zr

O. A. ROSSO; W. UNKELBACH; G. MOLNÁR

NUCLEAR PHYSICS A

ELSEVIER SCIENCE BV

Año: 1993 vol. 563 p. 74 - 96

0375-9474

The spectroscopic properties of the doubly closed-subshell nucleous 96Zr have been investigated within the framework of the RPA and QRPA. For the residual interaction a Landau-Migdal density dependent zero range force has been used in the particle-hole and particle-particle channels. The full level scheme of 96Zr up 5 MeV has been reproduced, including both the predominantly collective levels and the more pure particle-hole and particle-particle states. It is shown that the state-dependent pairing gaps, which results from a density-dependent delta-interaction as well as the inclusion of the particle-particle interaction, are essential in the description of the level structure of this nucleus.