993 resultados para 174-1071D
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对双奇核174Re的在束γ谱学实验数据作了仔细分析,提取出了带间与带内E2γ跃迁分支比,并导出了其约化跃迁概率的比值。用带混合理论对约化跃迁概率的比值进行了分析,得到带间相互作用强度及转动带形变的信息。发现不同组态的转动带其跃迁电四极矩具有明显的差异。与相邻奇A核的结构特征类似,这种跃迁电四极矩的差异很可能是由于1/2-[541]准质子或1/2-[521]准中子对原子核的形状驱动效应造成的。
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利用重离子熔合蒸发反应~ (159)Tb(~(20)Ne,5n)~(174)Re,并通过激发函数、KX- γ和γ-γ符合测量,研究了~(174)Re核的高自旋态.鉴别并指定了~(174)Re核的一个 基于л1/2-[541]v1/2~ -[521]准粒子组态上的双退耦带.还发现了两个分别具 有半退耦特征和强耦合特征的转动带,定性地讨论了它们的粒子组态.
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High spin states in Re-174 are investigated via the Sm-152(Al-27, 5n gamma)Re-174 reaction and gamma-gamma coincidence relationships are analysed carefully. A new band is identified due to its spectroscopic connection with the known pi 1/2(-)[541] circle times nu 1/2(-)[521] band. This band is proposed to be the ground-state band built on the pi 1/2(-)[541] circle times nu 5/2(-)[512] configuration in view of the low-lying intrinsic states in the neighbouring odd-mass nuclei. It is of particular interesting that the new band exhibits a phenomenon of low-spin signature inversion, providing a new situation for theoretical investigations.
C 174 INST-D 2013. 355 Réplicas talladas en piedra de esculturas precolombinas (San Agustín - Huila)
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5 fotografías a color.
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