Dipolar and scalar \(^{3}\)He-\(^{129}\)Xe frequency shifts in stemless cells

We study nuclear spin frequency shifts in a \(^{3}\)He-\(^{129}\)Xe comagnetometer caused by spin polarization of \(^{3}\)He. We use stemless cylindrical cells to systematically vary the cell geometry and separately measure the cell shape-dependent and shape-independent frequency shifts. We find tha...

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Bibliographic Details
Published in:arXiv.org 2019-05
Main Authors: Limes, M E, Dural, N, Romalis, M V, Foley, E L, Kornack, T W, Nelson, A, Grisham, L R, Vaara, J
Format: Article
Language:English
Subjects:
Aspect ratio
Diffusion rate
Frequency shift
Nuclear spin
Polarization (spin alignment)
Online Access:Get full text
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Summary:We study nuclear spin frequency shifts in a \(^{3}\)He-\(^{129}\)Xe comagnetometer caused by spin polarization of \(^{3}\)He. We use stemless cylindrical cells to systematically vary the cell geometry and separately measure the cell shape-dependent and shape-independent frequency shifts. We find that a certain aspect ratio for a cylindrical cell cancels the dipolar effects of \(^3\)He magnetization in the regime of fast spin diffusion. Using this control we observe a scalar \(^{3}\)He-\(^{129}\)Xe collisional frequency shift characterized by an enhancement factor \(\kappa_{\text{HeXe}} = -0.011\pm0.001\) in excellent agreement with theoretical calculation.
ISSN:2331-8422
DOI:10.48550/arxiv.1905.02029