Larmor precession

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Larmor precession

(ˈlɑːmɔː)
n
(Atomic Physics) precession of the orbit of an electron in an atom that is subjected to a magnetic field
[C20: named after Sir Joseph Larmor (1857–1942), British physicist]
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References in periodicals archive ?
The cyclotron frequency of the proton can be measured using what is called the Brown-Gabrielse invariance theorem, while the Larmor frequency can be measured by driving spin flips-using a radio frequency signal that heats the particle-and measuring the probability of a spin flip as a function of the drive frequency.
where the Larmor frequency [omega] = Q[B.sub.NC]/(2[m.sub.[theta]]).
The Larmor frequency is defined as a positive quantity, [[omega].sub.L] = [absolute value of (y)]B.
The rate of magnetic moment precession is given by the Larmor frequency:
Within the gradient coils, there is an RF coil that produces the RF field and detects the received signal at and near the Larmor frequency. Since the frequency range used in MR imaging is the same as that used in radio and television broadcasting, the room housing the scanner is surrounded by an RF shield that prevents the RF pulses radiating outside the room and prevents other RF signals radiating into the scan room, Hornak [6].
[12] (but with different geometrical parameters) in order to obtain an isotropic artificial medium with [[mu].sub.r] = -1 at 63.855 MHz, i.e., the Larmor frequency of 1.5 T MRI system.
At lower field strengths, the RF wavelength corresponding to the Larmor frequency of water protons is significantly longer than the typical diameter of a patient's torso.
The NMR resonance frequency [omega] depends on the Larmor frequency
Every proton, by virtue of charge and spin, exhibits a small nuclear magnetic moment ([mu]) and begins to precess at a frequency referred to as the Larmor frequency ([omega]).