Journal article

Publication year: 2016

Journal: International Journal of Modern Physics E

Volume number: 25

Issue number: 3

ISSN: 0218-3013

eISSN: 1793-6608

Open access status: Green

DOI Link: https://doi.org/10.1142/S0218301316500221

Publisher: World Scientific Publishing

Abstract: 
In this work, we examine the possibility to describe yrast positive- and negative-parity excitations of deformed even-even nuclei through a collective rotation model in which the nuclear surface is characterized by triaxial quadrupole and octupole deformations. The nuclear moments of inertia are expressed as sums of quadrupole and octupole parts. By assuming an adiabatic separation of rotation and vibration degrees of freedom, we suppose that the structure of the positive-and negative-parity bands may be determined by the triaxial-rigid-rotor motion of the nucleus. By diagonalizing the Hamiltonian in a symmetrized rotor basis with embedded parity, we obtain a model description for the yrast positive- and negative-parity bands in several actinide nuclei. We show that the energy displacement between the opposite-parity sequences can be explained as the result of the quadrupole-octupole triaxiality.

Harvard Citation style: Nadirbekov, M., Minkov, N., Strecker, M. and Scheid, W. (2016) Application of the triaxial quadrupole-octupole rotor to the ground and negative-parity levels of actinide nuclei, International Journal of Modern Physics E, 25(3), Article 1650022. https://doi.org/10.1142/S0218301316500221

APA Citation style: Nadirbekov, M., Minkov, N., Strecker, M., & Scheid, W. (2016). Application of the triaxial quadrupole-octupole rotor to the ground and negative-parity levels of actinide nuclei. International Journal of Modern Physics E. 25(3), Article 1650022. https://doi.org/10.1142/S0218301316500221