Transient field g factor and mean-life measurements with a rare isotope beam of 126Sn

G. J. Kumbartzki, N. Benczer-Koller, D. A. Torres, B. Manning, P. D. O'Malley, Y. Y. Sharon, L. Zamick, C. J. Gross, D. C. Radford, S. J.Q. Robinson, J. M. Allmond, A. E. Stuchbery, K. H. Speidel, N. J. Stone, C. R. Bingham

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Abstract

Background: The g factors and lifetimes of the 21+ states in the stable, proton-rich Sn isotopes have been measured, but there is scant information on neutron-rich Sn isotopes. Purpose: Measurement of the g factor and the lifetime of the 21+ state at 1.141 MeV in neutron-rich 126Sn (T1/2=2. 3×105y). Method: Coulomb excitation in inverse kinematics together with the transient field and the Doppler shift attenuation techniques were applied to a radioactive beam of 126Sn at the Holifield Radioactive Ion Beam Facility. Results: g(21+)=-0.25(21) and τ(21+)=1.5(2) ps were obtained. Conclusions: The data are compared to large-scale shell-model and quasiparticle random-phase calculations. Neutrons in the h11/2 and d3/2 orbitals play an important role in the structure of the 21+ state of 126Sn. Challenges, limitations, and implications for such experiments at future rare isotope beam facilities are discussed.

Original languageEnglish (US)
Article number034319
JournalPhysical Review C - Nuclear Physics
Volume86
Issue number3
DOIs
StatePublished - Sep 14 2012

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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