Abstract
A spin-polarized radioactive 123In (I π, g = 1.220(2) , T 1/2 = 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, an 123Ing.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% of β-decays was observed by the β-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.
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Communicated by B.R. Fulton
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Hirayama, Y., Mihara, M., Watanabe, Y.X. et al. Spin-polarization of radioactive 123Ing.s. by the tilted-foil method. Eur. Phys. J. A 47, 138 (2011). https://doi.org/10.1140/epja/i2011-11138-8
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DOI: https://doi.org/10.1140/epja/i2011-11138-8