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Structure of the lowest octupole states in N=82 magic nuclei

机译:N = 82魔核中最低八极态的结构

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Properties of the lowest octupole states with spin parity I-pi = 3(-) in N = 82 magic nuclei ranging from the neutron-rich, doubly-magic nucleus Sn-132 (Z = 50), through another doubly-magic nucleus Gd-146 (Z = 64), up to the proton drip-line nucleus Hf-154 (Z = 72) are examined. A comparative systematics of the excitation energies for the lowest quadrupole, octupole and hexadecapole states is presented. Variation of the B(E3) values with proton number is examined. Results from the microscopic structure analysis for the octupole states in these nuclei are discussed. A simple formula is proposed to describe the excitation energies of the lowest 3(-) level in these nuclei in the Sn-Gd region. The unidentified 3(1)(-) state in Te-134 is predicted to lie around 3950 keV.
机译:N = 82魔术核中自旋奇偶性I-pi = 3(-)的最低八极态的性质,从富含中子的双魔术核Sn-132(Z = 50)到另一个双魔术核Gd -146(Z = 64),直至质子滴线核Hf-154(Z = 72)。给出了最低四极,八极和十六极态的激发能的比较系统。检查B(E3)值随质子数的变化。讨论了这些原子核中八极状态的微观结构分析结果。提出了一个简单的公式来描述Sn-Gd区域中这些原子核中最低3(-)能级的激发能。预测Te-134中未识别的3(1)(-)状态约为3950 keV。

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