Electricity: measuring and testing – Particle precession resonance – Using optical pumping or sensing device
Patent
1991-06-10
1993-10-19
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
Using optical pumping or sensing device
324302, G01V 300
Patent
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:
patent: 3863144 (1975-01-01), Simpson et al.
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.
Chaillout Jean-Jacques
Kernevez Nelly
Leger Jean-Michel
Arana Louis
Commissariat a l''Energie Atomique
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