Spin-Exchange Pumped NMR Gyros

  title={Spin-Exchange Pumped NMR Gyros},
  author={T G Walker and Michael S. Larsen},
  journal={arXiv: Atomic Physics},

Figures and Tables from this paper

A Synchronous Spin-Exchange Optically Pumped NMR-Gyroscope
Inertial navigation systems generally consist of timing, acceleration, and orientation measurement units. Although much progress has been made towards developing primary timing sources such as atomic
Analysis on the Magnetic Field Response for Nuclear Spin Co-Magnetometer Operated in Spin-Exchange Relaxation-Free Regime
The results here not only give insight into the nature of self-compensate characteristic but also provide a precise model for the estimation of the magnetic noise-induced rotation measurement error in a SERF co-magnetometer.
Response dynamics of an alkali-metal–noble-gas hybrid trispin system
With numerical calculation of coupled Bloch equations, we have simulated the spin dynamics of nuclear magnetic resonance gyroscope based on alkali metal-noble gas hybrid trispin system. From the
Closed-Loop Nuclear Magnetic Resonance Gyroscope Based on Rb-Xe
A theoretical model for the closed-loop NMRG system based on the spin-exchange optical pumping of Rb-Xe is established and the transfer function is obtained, resulting in results in good agreement with the theoretical data.
Effects of spin-exchange collisions on the fluctuation spectra of hot alkali-metal vapors
We present a first-principles analysis of the noise spectra of alkali-metal vapors in and out of the spin-exchange-relaxation-free (SERF) regime, and we predict nonintuitive features with a potential
Suppression of the Bias Error Induced by Magnetic Noise in a Spin-Exchange Relaxation-Free Gyroscope
Spin-exchange relaxation-free gyroscope (SERFG) is a promising rotation sensor, and the bias error is one of its most important characteristics. It is identified that rotation measurement noise
Measuring scale factor of atomic spin gyroscope and closed-loop operation
The response of an atomic spin gyroscope to the AC magnetic field shows a dispersion-like signal as the field frequency. When a system rotates, the curve shifts with a unit scale factor. We used
Feedback control for manipulating magnetization in spin-exchange optical pumping system
Control of magnetization plays an important role in the scientific and technological field of manipulating spin systems. In this work, we study the problem of manipulating nuclear magnetization in


Synchronous Spin-Exchange Optical Pumping.
A new approach to precision NMR with hyperpolarized gases designed to mitigate NMR shifts due to the alkali spin-exchange field is demonstrated, allowing the Rb polarization to be optically pumped transverse to the bias field.
Suppression of spin-exchange relaxation using pulsed parametric resonance.
We demonstrate that spin-exchange dephasing of Larmor precession at near-Earth-scale fields is effectively eliminated by dressing the alkali-metal atom spins in a sequence of ac-coupled 2π pulses,
Nuclear spin gyroscope based on an atomic comagnetometer.
A nuclear spin gyroscope based on an alkali-metal-noble-gas comagnetometer to detect gyroscopic precession and a promising tool in searches for anomalous spin couplings beyond the standard model.
Spin-exchange optical pumping of noble-gas nuclei
Spin-exchange optical pumping of mixtures of alkali-metal vapors and noble gases can be used to efficiently polarize the nuclei of the noble-gas atoms. Liters of noble gases at standard temperature
Limits on anomalous spin-spin couplings between neutrons.
Experimental limits on new spin-dependent macroscopic forces between neutrons are reported and the coupling strength of neutron spin-spin interactions mediated by light pseudoscalar particles like the axion is placed at the 3 x 10(-7) level.
Atomic Electric Dipole Moment Measurement Using Spin Exchange Pumped Masers of 129Xe and 3He.
The comagnetometer provides a direct measure of several systematic effects that may limit electric dipole moment sensitivity, and the effects of changes in leakage current that result when the applied electric field is changed are measured.
Polarization of the nuclear spins of noble-gas atoms by spin exchange with optically pumped alkali-metal atoms
The theory of spin exchange between optically pumped alkali-Inetal atoms and noble-gas nuclei is presented. Spin exchange with heavy noble gases is dominated by interactions in long-lived van der
A Nuclear Magnetic Resonance (NMR) Gyro with Optical Magnetometer Detection
A nuclear magnetic resonance (NMR) gyroscope senses rotation as a shift in the Larmor frequency of nuclear magnetic moments as they precess about an applied field. A sensitive optically pumped
the nuclear magnetic resonance gyro (NMRG) is a rate integrating single axis gyro that obtains its rotational information from the dynamic angular motion of atomic nuclei. The gyro is being developed
Collisional 3He and 129Xe frequency shifts in Rb-noble-gas mixtures.
The Fermi-contact interaction that characterizes collisional spin exchange of a noble gas with an alkali-metal vapor also gives rise to NMR and EPR frequency shifts of the noble-gas nucleus and the alkala-metal atom, respectively, which allows accurate 129Xe polarimetry with no need to reference a thermal-equilibrium NMR signal.