Contribution of quasiparticle-phonon, recoil and coriolis interactions in describing low-lying states of 133Nd isotope
A. Boulal1 - J. Inchaouh1 - M.K. Jammari2
1 Université Hassan II, Faculté des Sciences Ben M'Sick, Département de Physique, BP.
7955, Casablanca, Maroc
2 Université Hassan II, Faculté des Sciences Aïn Chock, Département de Physique, BP. 5366,
Casablanca, Maroc
Received: 23 August 1999 Communicated by P. Schuck
Abstract
A quasiparticle-phonon coupling based on one quadrupole phonon is developed.
The coupling is constructed by using a deformed average field of Nilsson, a
monopole pairing interaction and a quadrupole-quadrupole force. Microscopic
structure of the quadrupole phonon is given from the Tamm-Dancoff
Approximation. The two effects of recoil and Coriolis forces are included
with the assumption of a symmetric rotational motion. Since theoretical
treatment is performed for an odd-A nuclei the configuration of intrinsic
states should contain both one-quasiparticle and quasiparticle-phonon
components. This method is applied to describe the level scheme of 133Ndfor which an agreement with experimental data is obtained. The results are
also found similar to previous calculations obtained by the Particle plus
Triaxial Rotor Model.
PACS
21.10.Hw Spin, parity, and isobaric spin -
21.10.Re Collective levels -
21.30.Fe Forces in hadronic systems and effective interactions -
27.60.+j
Copyright Società Italiana di Fisica, Springer-Verlag 2000
