Dead-zone free optically pumped m_ magnetometer

Details Dead-zone free optically pumped m_ magnetometer Dead-zone free optically pumped m_ magnetometer

G - Physics

01

R

G01R 33/26 (2006.01) G01V 3/40 (2006.01)

Patent

CA 2042446

A gas cell, preferably in the shape of a hemi- sphere, forms a transparent enclosure for helium or an alkali metal vapour. A coil forms an A.C. magnetic field H1 in the enclosure, the magnetic field having multi- directional field lines. A lamp or lamps, comprising either helium or alkali metal vapour, direct circularly polarized resonance radiation at the enclosure such that the radiation rays travelling through the enclosure are multi- directional. A photodetector or photodetectors detect the radiation rays after they have passed through the gas cell. The multi-directionality of the radiation rays and the A.C. magnetic field H1 ensures that the magnetometer will not possess dead-zones.

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