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Effects of spin-exchange collisions in a high-density alkali-metal vapor in low magnetic fields
Abstract
Spin-exchange collisions often play a dominant role in the broadening of Zeeman resonances in an alkali-metal vapor. Contrary to intuitive expectations, at high alkali-metal densities this broadening can be completely eliminated by operating in a low magnetic field, allowing construction of ultrasensitive atomic magnetometers. We describe a detailed study of the Zeeman resonance frequencies and linewidths as a function of the magnetic field, alkali-metal density, and the degree of spin polarization of the atoms. Due to the nonlinear nature of the density matrix equations describing the spin-exchange collisions both the gyromagnetic ratio and the linewidth change as a function of the polarization. The results of experimental measurements are in excellent agreement with analytical and numerical solutions of the density matrix equations.
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Citations
Cites
A subfemtotesla multichannel atomic magnetometer
Kominis, I. K., Kornack, T. W., Allred, J. C., & Romalis, M. V. (2003) · Nature · doi:10.1038/nature01484 · Cited by 1,631
Self-citation
Cited by
Budker, D., & Romalis, M. (2007) · Nature Physics · doi:10.1038/nphys566 · Cited by 1,916
Self-citationUltrahigh sensitivity magnetic field and magnetization measurements with an atomic magnetometer
Dang, H. B., Maloof, A. C., & Romalis, M. V. (2010) · Applied Physics Letters · doi:10.1063/1.3491215 · Cited by 891
Self-citationNuclear Spin Gyroscope Based on an Atomic Comagnetometer
Kornack, T. W., Ghosh, R. K., & Romalis, M. V. (2005) · Physical Review Letters · doi:10.1103/physrevlett.95.230801 · Cited by 565
Self-citationSpin-exchange relaxation-free magnetometry using elliptically polarized light
Shah, V., & Romalis, M. V. (2009) · Physical Review A · doi:10.1103/physreva.80.013416 · Cited by 273
Self-citationBorna, A., Iivanainen, J., Carter, T. R., McKay, J., Taulu, S., Stephen, J., & Schwindt, P. D. D. (2022) · NeuroImage · doi:10.1016/j.neuroimage.2021.118818 · Cited by 120
Metadata
- Authors
- Savukov, I. M., & Romalis, M. V.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2005-02-10
- Volume
- 71
- Issue
- 2
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2055054073
- Cited by
- 232
- References
- 1
- FWCI
- 1.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- Savukov, I. M., & Romalis, M. V. (2005). Effects of spin-exchange collisions in a high-density alkali-metal vapor in low magnetic fields. Physical Review A. https://doi.org/10.1103/physreva.71.023405
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