Optical pumping, resonance magnetometer using a plurality of mul

Electricity: measuring and testing – Particle precession resonance – Using optical pumping or sensing device

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324302, G01V 300

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active

052549470

ABSTRACT:
A magnetometer for precise measurement of weak magnetic fields involves a system which injects a plurality of light beams into a gas containing cell. An optical multiplexer receives the light beams emitted by a source and successively supplies a plurality of light beams which traverse a corresponding number of polarizers. The beams are subsequently injected into the cell 10 in the plurality of different directions in order to optically pump the gas. A detection device detects an electrical resonance signal and supplies a plurality of signals corresponding to the optical pumping beams.

REFERENCES:
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patent: 4209746 (1980-06-01), Abramov et al.
patent: 4509014 (1985-04-01), Karwacki et al.
"Low field helium magnetometer for space applications", vol. NS-10, No. 1, 1963, R. E. Slocum et al, pp. 165-171.

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