双奇核174Re中的准粒子形状驱动效应
Quasiparticle Shape Driving Effects in Odd-odd 174Re
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摘要: 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E2 γ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。 By analyzing carefully the inbeam γ spectroscopy data of odd-odd 174Re, we have extracted the branching ratios of the interband and intraband E2 γ transitions from the two rotational bands of different configurations in 174Re.The ratios of the reduced transition probabilities B(E2) have been deduced and analyzed using a band mixing theory. Information on the band interaction and deformation have been obtained. Apparent differences of transition quadrupole moments are found in the two configurations. A likely reason for the differences in the transition quadrupole moments is the shape driving effects of 1/2-541 quasiproton or 1/2-521 quasi neutron, which has been proposed in the oddA neighbors of 174Re.Abstract: By analyzing carefully the inbeam γ spectroscopy data of odd-odd 174Re, we have extracted the branching ratios of the interband and intraband E2 γ transitions from the two rotational bands of different configurations in 174Re.The ratios of the reduced transition probabilities B(E2) have been deduced and analyzed using a band mixing theory. Information on the band interaction and deformation have been obtained. Apparent differences of transition quadrupole moments are found in the two configurations. A likely reason for the differences in the transition quadrupole moments is the shape driving effects of 1/2-541 quasiproton or 1/2-521 quasineutron, which has been proposed in the odd-A neighbors of 174Re.
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