1. Lifetime of the () state in 135Te.
- Author
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Simpson, G, Regis, J M, Bettermann, L, Genevey, J, Jolie, J, Köster, U, Materna, T, Malkiewicz, T, Muraz, J-F, Pinston, J A, Roussiere, B, and Thiamova, G
- Subjects
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SCINTILLATORS , *MASS spectrometers , *NEUTRONS , *SPECTROMETERS , *PROTONS , *IONS , *TELLURIUM - Abstract
The lifetime of the state of 135Te has been measured to be τ = 809(22) ps, corresponding to a reduced transition rate of =6.6(2) W.u. The experiment was performed at the focal point of the Lohengrin spectrometer and μs-delayed γ rays from mass-selected A = 135 ions were detected by four LaBr3(Ce) scintillators. This allowed the fast-timing technique to be used to access lifetimes in the 10s-of-ps to ns time region. The value is typical of a vibrational transition, despite 135Te possessing only one valence neutron and two valence protons. Shell model calculations performed with the state-of-the-art effective interaction predict a B(E2) value close to the experimental one and show that contributions from the π(g7/2, d5/2)νf7/2 couplings are coherent. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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