Abstract
Background: The evolution of and interplay between single-particle and collective excitations in the 40 50 range for Sr and Zr isotopes have been studied.
Purpose: Measurement of the factor of the 2 and 4 states in radioactive Zr while simultaneously remeasuring the factors in the Sr isotopes and extention of the measurements to higher energy states in the Sr isotopes. Lifetimes of states in these nuclei are determined.
Methods: The transient field technique in inverse kinematics and line-shape analysis using the Doppler-shift attenuation method are applied. The Zr nuclei were produced by the transfer of an particle from the C nuclei of the target to Sr nuclei in the beam. The excited states in the stable Sr isotopes were simultaneously populated via Coulomb excitation by C in the same target. Coulomb excitation measurements on Sr were carried out with the same apparatus.
Results: The resulting factors and values of these nuclei reveal similarities between the two chains of Zr and Sr isotopes. Large-scale shell-model calculations were performed within the orbital space for both protons and neutrons and yielded results in agreement with the experimental data.
Conclusions: In this paper the magnetic moments and lifetimes of several low-lying states in Zr and Sr have been measured and compared to large-scale shell-model calculations.
4 More- Received 15 February 2012
DOI:https://doi.org/10.1103/PhysRevC.85.044322
©2012 American Physical Society