Abstract
The technique of an active nuclear spin maser is adopted in the search for electric dipole moment in a diamagnetic atom 129Xe. In order to reduce systematic uncertainties arising from long-term drifts of the external magnetic field and from the contact interaction between longitudinal polarized Rb atoms and 129Xe spin, a 3He comagnetometer with a double-cell geometry was employed. The remaining shift, which turned out to show some correlation with the cell temperature, was mitigated by stabilizing the cell temperature. As a result, the frequency drift of the 129Xe maser was reduced from 12 mHz to 700 μHz, and the determination precision of frequency of 8.7 nHz was obtained for a 2×104 s measurement time using the double-cell geometry cell.
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Proceedings of the 5th Joint International Conference on Hyperfine Interactions and International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2014) Canberra, Australia, 21-26 September 2014
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Sato, T., Ichikawa, Y., Ohtomo, Y. et al. EDM measurement in 129Xe atom using dual active feedback nuclear spin maser. Hyperfine Interact 230, 147–153 (2015). https://doi.org/10.1007/s10751-014-1113-9
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DOI: https://doi.org/10.1007/s10751-014-1113-9