Interpretation of metastable states in the $$N>70$$ Zr region
Interpretation of metastable states in the $$N>70$$ Zr region
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$$N>70$$ Zr 区域亚稳态的解释
DOI：
10.1140/epja/s10050-023-01103-7
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Browne F
中科院分区：
文献类型：
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作者：
Browne F
在RIKEN Nishina中心放射性同位素束工厂的一项实验中，在345 MeV/nucleonU束的飞行裂变后产生的核中观察到了同质异能态。异构体报告的核跨越预测的长扁形形状变化的边界，锆（千电子伏;S），铌（千电子伏;S），铌（千电子伏;S），和钼（千电子伏;S），进行了比较的势能面计算，得到了一个选择的低洼配置为每个核。初步分配的基态和激发态的基础上的能量相似性的计算，减少跃迁的衰变概率，和限制的过渡多极性射线符合测量。这些分配是暗示显着的变形是持久的在这个地区。此外，还介绍了Nb、Nb、Tc、Ru、Ru、Rh和Rh中不跨越长扁转变的同分异构体。
Isomeric states were observed in nuclei produced in an experiment at the RIKEN Nishina Center Radioactive Isotope Beam Factory following the in-flight fission of a 345 MeV/nucleonU beam. Isomers reported in nuclei spanning a predicted prolate-oblate shape change boundary,Zr (keV;s),Nb (keV;s),Nb (keV;s), andMo (keV;s), are compared to potential-energy surface calculations which gave a selection of low-lying configurations for each nucleus. Tentative assignments of ground and excited states were made based on energy similarities to the calculations, reduced transition probabilities of the decays, and constraints of transition multipolarities from-ray coincidence measurements. These assignments are suggestive of significant deformation being persistent forin this region. In addition, isomers inNb,Nb,Tc,Ru,Ru,Rh, andRh, not spanning the prolate-oblate transition discussed, are presented.