Metrological analysis of alkali-helium magnetometers

Blinov, E. V.; Zhitnikov, R. A.; Il'in, E. A.; Kuleshov, P. P.; Shifrin, V. Ya.

doi:10.1007/bf00864974

Cited by 11 publications

(15 citation statements)

References 4 publications

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“…The atomic spin orientation in alkali±helium plasma was shown to affect its electric conductivity. Detailed studies of spin orientation transfer from optically oriented atoms of alkali metals to alkali±helium plasma products (2 3 S 1 -metastable He atoms and free electrons) are reported in Refs [45,127]. An important achievement is the possibility of orienting spin momenta of helium 2 3 S 1 atoms in the absence of direct optical pumping with resonance helium light that permits the elimination of large light shifts in the frequency of magnetic resonance excited in the system of Zeeman sublevels of 2 3 S 1 -state He atoms.…”

Section: Alkali±helium Magnetometermentioning

confidence: 99%

“…A new type of quantum magnetometric device, Hemagnetometers with optical orientation of alkali metal atoms or alkali±helium magnetometers, was proposed in Refs [128,129]. At present, polarization of helium 2 3 S 1 atoms by spin orientation transfer from optically oriented alkali metal atoms is being demonstrated in CsÀHe, RbÀHe, and KÀHe gas discharge plasmas; magnetometric devices using this effect have been created [130±132].…”

Section: Alkali±helium Magnetometermentioning

confidence: 99%

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Modern radio-optical methods in quantum magnetometry

Aleksandrov

Vershovskiĭ

2009

Phys.-Usp.

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This paper is an extension of a part of the talk delivered under the more general title``Narrow spectral lines in fundamental metrology: state of the art, prospects, and problems'' at the session of the 90th anniversary of Physics± Uspekhi. The talk reviewed past developments and the current status of the metrology of length, frequency/time, and magnetic fields. The measurement of these quantities currently relies on the high stability of energies of standard transitions between metastable atomic states. Because of space restrictions in the journal, all metrology topics other than the title one were omitted in the present review.

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Section: Alkali±helium Magnetometermentioning

confidence: 99%

Section: Alkali±helium Magnetometermentioning

confidence: 99%

Modern radio-optical methods in quantum magnetometry

Aleksandrov

Vershovskiĭ

2009

Phys.-Usp.

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“…The device revealed a short-term resolution and response time equal to those of cesium self-oscillating OPM, while its long-term stability turned out to be much higher. The readings of the tandem ware compared with those of the Cs-He M z -OPM which was known to be stable within 50 pT [8]. The long comparison (during up to two years) showed that the r.m.s.…”

Section: Tandem-type Magnetometersmentioning

confidence: 99%

Recent Progress in Optically Pumped Magnetometers

Alexandrov

2003

Physica Scripta

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Optically pumped magnetometres (OPM) are known as the most precise instruments for scalar measurement of low magnetic fields, including those of the Earth's magnetic field. For a long time OPM could not compete, in absolute accuracy, with the proton precession magnetometers, being, at the same time, much more sensitive and fast. Nowadays, due to the considerable progress in the OPM performance, several types of OPM became much more accurate than the best proton magnetometer. During the last decade the main progress was associated with OPM of the following three types: (1) The narrow-line potassium M x -OMP with the highest shot-noise-limited resolution (about 10 fT=Hz 1=2 ) and with an absolute accuracy better than 0.1 nT; (2) The ''tandem'' M x -M z -type magnetometer with a narrow line potassium M z unit of enhanced absolute accuracy (of about 10 pT); (3) The laser pumped 3 He freeprecession magnetometer of highest absolute accuracy and lowest energy consumption. Each of these three types has its own specific features, preferable in certain applications.

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“…Quantum magnetometers with optical pumping currently play an important role in various magnetic measurements [1,2]. Working media of this kind of magnetometers can be atoms of alkali metals in the ground state [3], mixtures of alkali atoms of different sorts [4,5], mixtures of alkali atoms and excited atoms of Helium in the metastable 2 3 S 1 -state [6], excited atoms of Helium in the metastable 2 3 S 1 -state [7].…”

Section: Introductionmentioning

confidence: 99%