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

• Published in: Physical review. C, Nuclear physics Vol. 86; no. 3
• Main Authors: Kumbartzki, G., Benczer-Koller, N., Torres, D A, Manning, B., O'Malley, Patrick, Sharon, Y Y, Zamick, L, Gross, Carl J, Radford, David C, Robinson, S J Q, Allmond, J M, Stuchberry, A. E., Speidel, K H, Stone, N. J., Bingham, C. R.
• Format: Journal Article
• Language: English
• Published: United States 14-09-2012
• Subjects: ATTENUATION; COULOMB EXCITATION; g factors; LIFETIME; lifetimes; NEUTRONS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; radioactive beams; RADIOACTIVE ION BEAMS; TRANSIENTS
• DOI: 10.1103/PhysRevC.86.034319
• EISSN: 1089-490X
• ISSN: 0556-2813

Background: The g factors and lifetimes of the 2+1 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 2+1 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(2+1 ) = 0.25(21) and (2+1 ) = 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 2+1 state of 126Sn. Challenges, limitations, and implications for such experiments at future rare isotope beam facilities are discussed.