Phenomenological analysis of B(E2) transition strengths in neutron-rich carbon isotopes

A. O. Macchiavelli, M. Petri, P. Fallon, S. Paschalis, R. M. Clark, M. Cromaz, and I. Y. Lee
Phys. Rev. C 90, 067305 – Published 17 December 2014

Abstract

Recent experimental results related to the quadrupole collectivity in neutron-rich carbon isotopes are analyzed in a phenomenological approach. B(E2;21+01+) transitions rates derived from lifetime measurements are interpreted in terms of the mixing of basic neutron and proton 2+ excitations. A seniority inspired scheme is used to describe the neutron component. The observed increase in collectivity can be explained with a corresponding increased role of proton excitations. This is likely due to the reduction of the proton p3/2p1/2 spin-orbit splitting caused by the tensor and two-body spin-orbit components of the force between the protons and the added neutrons in the (d5/2+s1/2) shells.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 13 August 2014
  • Revised 30 September 2014

DOI:https://doi.org/10.1103/PhysRevC.90.067305

©2014 American Physical Society

Authors & Affiliations

A. O. Macchiavelli1, M. Petri1,2, P. Fallon1, S. Paschalis1,2, R. M. Clark1, M. Cromaz1, and I. Y. Lee1

  • 1Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 2Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 90, Iss. 6 — December 2014

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×