Negative muons captured by atoms with zero nuclear spin usually retain about 1/6 of their initial spin polarization P0 after cascading down to their lowest Bohr orbital. This is particularly observed for μ- implanted into graphite and diamond. However, μ- implanted into a powder of the fullerene C60 are found to show essentially zero residual polarization. A residual polarization of ∼ P0/6 is again seen in metallic K3C60. We speculate that these results are to be explained on the basis of hyperfine effects after completion of the muonic cascade.
|出版ステータス||Published - 1997 12 1|
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