Dipolar and scalar ³He−¹²⁹Xe frequency shifts in stemless cells

Limes, M. E.; Dural, N.; Romalis, M. V.; Foley, E. L.; Kornack, T. W.; Nelson, A.; Grisham, L. R.; Vaara, J. (2019-07-11)
 
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URL:
https://doi.org/10.1103/PhysRevA.100.010501

Limes, M. E.
Dural, N.
Romalis, M. V.
Foley, E. L.
Kornack, T. W.
Nelson, A.
Grisham, L. R.
Vaara, J.
American Physical Society
11.07.2019

Limes, M., Dural, N., Romalis, M., Foley, E., Kornack, T., Nelson, A., Grisham, L., Vaara, J. (2019) Dipolar and scalar He3−Xe129 frequency shifts in stemless cells. Physical review A, 100 (1), doi:10.1103/PhysRevA.100.010501

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©2019 American Physical Society. Published in this repository with the kind permission of the publisher.
https://rightsstatements.org/vocab/InC/1.0/
doi:https://doi.org/10.1103/PhysRevA.100.010501
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https://urn.fi/URN:NBN:fi-fe2019081524260
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Abstract

We study nuclear spin frequency shifts in a ³He−¹²⁹Xe comagnetometer caused by spin polarization of ³He. 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 ³He magnetization in the regime of fast spin diffusion. Using this control, we observe a scalar ³He−¹²⁹Xe collisional frequency shift characterized by an enhancement factor κHeXe=−0.011±0.001, which is in excellent agreement with theoretical calculations.

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