Abstract
Low-lying states of even-even and odd-mass ruthenium isotopes with mass numbers from 95 to 102, including level schemes, electric quadrupole and magnetic dipole moments, and transition rates, are studied within the framework of the nucleon pair approximation (NPA) of the shell model, by using the phenomenological pairing plus quadrupole interactions. Good agreement is obtained between the calculated results and experimental data. The interesting behaviors of factors versus nuclear spin (and mass number ) in even-even nuclei are analyzed. The dominant configurations of yrast low-lying states in odd-mass isotopes are discussed in the collective nucleon-pair subspace. The calculated electric quadrupole moments and magnetic moments of low-lying states, many of which have not yet been measured for these nuclei, are useful for future studies.
- Received 29 August 2015
- Revised 16 April 2016
DOI:https://doi.org/10.1103/PhysRevC.93.054323
©2016 American Physical Society