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arXiv · 1805.11578

Dipolar and scalar $^3$He and $^{129}$Xe frequency shifts in mm-sized cells

M. E. Limes·N. Dural·M. V. Romalis·E. L. Foley·T. W. Kornack·A. Nelson·L. R. Grisham
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Abstract

We describe a $^{3}$He-$^{129}$Xe comagnetometer operating in stemless anodically bonded cells with a 6 mm$^3$ volume and a $^{129}$Xe spin coherence time of 300 sec. We use a $^{87}$Rb pulse-train magnetometer with co-linear pump and probe beams to study the nuclear spin frequency shifts caused by spin polarization of $^{3}$He. By systematically varying the cell geometry in a batch cell fabrication process we can separately measure the cell shape dependent and independent frequency shifts. We find that a certain aspect ratio of the cylindrical cell can cancel the effects of $^3$He magnetization that limit the stability of vapor-cell comagnetometers. Using this control we also observe for the first time a scalar $^{3}$He-$^{129}$Xe collisional frequency shift characterized by an enhancement factor $κ_{\text{HeXe}} = -0.011\pm0.001$.

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M. E. Limes, N. Dural, M. V. Romalis, E. L. Foley, T. W. Kornack, A. Nelson, L. R. Grisham. 2018-09-28. Dipolar and scalar $^3$He and $^{129}$Xe frequency shifts in mm-sized cells. https://doi.org/10.1103/physreva.100.010501

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