Lifetimes of low- and high-spin states in the odd-A nucleus Hf177 were measured during the EXILL&FATIMA campaign using a spectrometer equipped with eight HPGe-Clover detectors and 16 fast-timing LaBr3(Ce) detectors. For the determination of lifetimes in the pico- to nanosecond regime, the well-established generalized centroid difference method was used. Lifetimes of the 9/2−, 9/2+, 11/2−, 11/2+ states were remeasured, the lifetimes of the 13/2−, 17/2−, 13/2+, 15/2+, and 17/2+ states were determined for the first time and an upper limit for the 19/2+ state has been established. From these lifetimes absolute reduced transition probabilities were extracted and compared to particle-rotor-model calculations and quasiparticle-phonon-model calculations showing the importance of including multipole-multipole interactions in the description of odd-A nuclei in the rare earth region.

中文翻译：

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奇数−A 原子核 Hf177 的寿命测量

在 EXILL&FATIMA 活动期间，使用配备有 8 个 HPGe-Clover 探测器和 16 个快速定时 LaBr3(Ce) 探测器的光谱仪测量了奇数 A 核 Hf177 中低自旋态和高自旋态的寿命。为了确定皮秒到纳秒范围内的寿命，使用了完善的广义质心差分方法。重新测量了 9/2-、9/2+、11/2-、11/2+ 状态的寿命，13/2-、17/2-、13/2+、15/2+ 状态的寿命，并且首次确定了 17/2+ 状态，并确定了 19/2+ 状态的上限。