Spin-polarization of radioactive 123Ing.s.by the tilted-foil method
Spin-polarization of radioactive 123Ing.s.by the tilted-foil method
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放射性 123Ing.s. 的倾斜箔法自旋极化
DOI：
10.1140/epja/i2011-11138-8
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
et al
中科院分区：
文献类型：
--
作者：
Y.Hirayama;et al
用倾斜箔法成功地产生了自旋极化放射性~（123）In（Iπ，g= 1.220（2），T_（1/2）= 5.97（5）s）光束。这种核素是有史以来最重的极化在其基态通过这种方法。利用基于ISOL的再加速型TRIAC装置，对305 keV/核子的123 Ing. s.束流以70°倾角通过15片碳膜堆，用β-NMR技术观察到β衰变的不对称性为0.76 ± 0.25%。不对称性表明，倾斜箔方法结合再加速设施是有用的，用于产生自旋极化光束的应用，如核物理和材料科学。
A spin-polarized radioactive123In (Iπ,g= 1.220(2) ,T1/2= 5.97(5) s) beam has been successfully generated by the tilted-foil method. This nuclide is the heaviest ever polarized in its ground state by this method. Using the ISOL-based re-acceleration-type facility TRIAC, an123Ing.s.beam of 305 keV/nucleon went through a stack of 15 carbon foils with a tilt angle of 70°, and an asymmetry of 0.76 ± 0.25% ofβ-decays was observed by theβ-NMR technique. The asymmetry shows that the tilted-foil method combined with a re-acceleration facility is useful for producing spin-polarized beams for applications such as nuclear physics and materials science.