US PATENT SUBCLASS 324 / 300
PARTICLE PRECESSION RESONANCE

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

300PARTICLE PRECESSION RESONANCE {7}
301  DF  .~> Using a magnetometer {1}
303  DF  .~> Using well logging device
304  DF  .~> Using optical pumping or sensing device {1}
306  DF  .~> Determine fluid flow rate
307  DF  .~> Using a nuclear resonance spectrometer system {8}
316  DF  .~> Using an electron resonance spectrometer system {1}
318  DF  .~> Spectrometer components {3}

DEFINITION

Classification: 324/300

PARTICLE PRECESSION RESONANCE:

(under the class definition) Subject matter relating to the measurement of the energy interchange between precessing atomic particles in a surrounding electromagnetic field.

(1) Note. The energy interchange may be characterized by a ratio between the mechanical angular momentum and the magnetic moment of an atomic system.

(2) Note. Precession is a change in the orientation of the axis of a rotating particle, the effect of which is to rotate this axis (axis of spin) about a line (axis of precession) perpendicular to its original direction and to the axis (axis of torque) of the moment producing the change.

(3) Note. Resonant frequency is the frequency at which a given system or object will respond with maximum amplitude when driven by an external sinusoidal force of constant amplitude.