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Laser-assisted decay spectroscopy and mass spectrometry of178Au
Physical Review C ( IF 3.1 ) Pub Date : 
J. G. Cubiss et al.

A comprehensive study of the isotope 178Au has been made at the CERN-ISOLDE facility, using resonance laser ionization. Two long-lived states in 178Au were identified – a low-spin ground state and a high-spin isomer – each of which were produced as pure beams. Using the ISOLTRAP precision Penning trap the excitation energy of the isomeric state in 178Au was determined to be E*=189(14)~keV. The α-decay fine structure patterns of the two states were studied using the Windmill decay station, providing information on the low-lying states in the daughter nucleus 174Ir. Nuclear spin assignments of I(178Aug)=(2,3) and I(178Aum)=(7,8) are made based on the observed β-decay feeding and hyperfine structure intensity patterns. These spin assignments are used for fitting the hyperfine structures of the two states from which values for the magnetic dipole moments are extracted. The extracted moments are compared with calculations using additivity relations to establish the most probable configurations for 178Aug,m.

中文翻译:

178Au的激光辅助衰减光谱和质谱

同位素的综合研究 178金是在CERN-ISOLDE工厂使用共振激光电离法制得的。的两个长寿国家178鉴定出金(低旋转基态和高旋转异构体),它们均以纯光束形式产生。使用ISOLTRAP精密Penning捕集阱中同分异构态的激发能178金被确定为 Ë*=18914〜keV。的α使用风车衰变站研究了这两种状态的衰变精细结构模式,提供了子核低洼状态的信息 174铱。的核自旋分配一世178G=23一世178=78 是根据观察到的 β衰减进料和超精细结构强度模式。这些自旋分配用于拟合两个状态的超精细结构,从中提取出磁偶极矩的值。使用加性关系将提取的矩与计算进行比较,以建立最可能的配置178G
更新日期:2020-09-23
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