Abstract
Aγ-γ coincidence technique has been developed forg-factor measurements of short-lived nuclear states. The method involvesγ-detection in 4π geometry as well as transient magnetic fields and the recoil-distance technique. A first experiment was performed for the isotope160Yb produced in the reaction64Ni(100Mo, 4n) at 430 MeV beam energy. The valueg=− 0.23(31) of the 14+ yrast state, which is compatible with zero, establishes thevi 13/2 quasiparticle structure to be responsible for the first backbend. A meang-factor for low spin states around the 4+ state,g=+0.48(26) was also derived as well as lifetimes for yrast states up toI π=8+.
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One of us (E.L.) wants to express his gratitude for the kind hospitality at GSI Darmstadt. This work has been partly supported by Polish Ministry of Education under the contract No. CPBP01.09.
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Lubkiewicz, E., Emling, H., Grein, H. et al. Measurement ofg-factors in160Yb by aγ-γ coincidence technique. Z. Physik A - Atomic Nuclei 335, 369–377 (1990). https://doi.org/10.1007/BF01290183
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DOI: https://doi.org/10.1007/BF01290183