Abstract
In order to disclose the polarization mechanism of the tilted-foil technique, systematic experimental studies were performed through direct observations of the nuclear polarization of short-lived beta-emitters. The present studies concentrated on the mechanisms of the following processes: (1) production of atomic polarization in the beam–tilted-foil interaction, (2) polarization transfer between an atom and a nucleus, and (3) enhancement of nuclear polarization by the beam multi-tilted-foil interaction. The present results have confirmed the plausibility of a previous model in which the atomic-polarization process in the tilted-foil technique is attributed to the right–left asymmetry of the electron-capture process at the final surface of a tilted foil. The enhancement effect of nuclear polarization by the multi-tilted-foil technique could be consistently explained by a model proposed by Goldring and Niv. Further information on atomic processes is required to make a definite statement on hyperfine interactions and atomic configurations, which contribute to polarization transfer.
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Momota, S., Nojiri, Y., Fukuda, M. et al. Mechanism of Polarization Production by Means of the Tilted-Foil Technique Studied Using Beta-Radioactive Nuclei. Hyperfine Interactions 141, 513–548 (2002). https://doi.org/10.1023/A:1022465916449
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DOI: https://doi.org/10.1023/A:1022465916449