L06-page8 - field changes, proton will precess to align...

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8 Flux Gate Magnetometer • Advantages • Can make vector (directional) measurements • Can record continuously • Disadvantages • Sensitive to temperature • Only measures field in direction of coils. • With good insulation, 1nT accuracy can be achieved (typical accuracy 5 to 10 nT) Signal Proton Precession Magnetometer • If external magnetic
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Unformatted text preview: field changes, proton will precess to align with new field The precession frequency (Larmor frequency) depends on external field strength Single proton nuclei exhibit an angular momentum, which yields a net-dipole moment Moment of proton will tend to align with an external field...
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This note was uploaded on 01/07/2012 for the course PHYSICS 384 taught by Professor Wei during the Spring '09 term at SUNY Stony Brook.

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