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In-beam γ -ray spectroscopy of the N = 85 isotones 159Wand 160Re

机译:N = 85个同构物159W和160Re的束内γ射线光谱

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摘要

Excited states have been identified in the isotones 159n74Wand 160n75Re, which were produced in fusion-evaporationnreactions of a beam of 310-MeV 58Ni ions with an isotopically enriched 106Cd target. The strongest γ -rayntransitions in 159Wand 160Re are interpreted as continuing the regular sequence of states identified in lighter N =n85 isotones that are built upon 9/2− and 10+ states, respectively. The half-life of 155Hf, the β-decaying daughternof the α decay of 159W, was measured with improved precision to be 840 ± 30 ms.
机译:在同构的159n74W和160n75Re中发现了激发态,它们是通过310-MeV 58Ni离子束与同位素富集的106Cd靶的融合蒸发反应产生的。 159W和160Re中最强的γ射线跃迁被解释为延续了分别在9 / 2-和10+状态下建立的较轻N = n85同等异构体中确定的状态的规则序列。 155Hf的半衰期,即159W的α衰变的β衰变子,经改进后的精度为840±30 ms。

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