ProphetesAI is thinking...
gyromagnetic
MindMap
Loading...
Sources
gyromagnetic
gyromagnetic, a. (ˌdʒaɪərəʊmægˈnɛtɪk) [See gyro-.] 1. Physics. Of or pertaining to the interdependence of the angular momentum of a spinning charged particle and its resulting magnetic moment; gyromagnetic effect: any effect arising from this interdependence, esp. the fact that a change in the angul...
Oxford English Dictionary
prophetes.ai
Gyromagnetic ratio
The -factor only differs from the gyromagnetic ratio in being dimensionless. Gyromagnetic factor not as a consequence of relativity
Since a gyromagnetic factor equal to 2 follows from the Dirac's equation it is a frequent misconception
wikipedia.org
en.wikipedia.org
Receptivity (NMR)
Some isotopes, tritium for example, have large gyromagnetic ratios but low abundance. Other isotopes, for example 103Rh, are highly abundant but have low gyromagnetic ratios.
wikipedia.org
en.wikipedia.org
Insensitive nuclei enhanced by polarization transfer
Alternative methods are therefore necessary for nuclei with a negative gyromagnetic ratio. Unlike with NOE, no penalty is incurred by a negative gyromagnetic ratio in INEPT.
wikipedia.org
en.wikipedia.org
Vanadium-51 nuclear magnetic resonance
Its resonance frequency is close to that of 13C (gyromagnetic ratio = 6.728284 rad T−1s−1).
wikipedia.org
en.wikipedia.org
Nitrogen-15 nuclear magnetic resonance spectroscopy
Gyromagnetic ratio
Unlike most nuclei, the gyromagnetic ratio for 15N is negative. Most common nuclei have positive gyromagnetic ratios such as 1H and 13C.
wikipedia.org
en.wikipedia.org
Einstein–de Haas effect
The quantity is called gyromagnetic ratio. The following experiments demonstrated that the gyromagnetic ratio for iron is indeed close to rather than .
wikipedia.org
en.wikipedia.org
Edwin Ross Williams
Measurement Science for "excellence in measurement research leading to an upper limit or the rest mass of the photon and precision determination of the gyromagnetic
wikipedia.org
en.wikipedia.org
核磁共振的原理是什么？
氢原子中的质子本身因为自旋（Spin）而产生磁矩， 那么在外加磁场 \overrightarrow{B_{0}} (如图施加在+z方向)时，单个磁矩会在外磁场中进动（Precession）： \omega_{0}=\gamma B_{0} .如图Fig. 1所示： 其中 \gamma 是Gyromagnetic 逆着磁场方向排列(anti-parallel alignment)-z为高能态，平衡状态下，居于低能态的磁矩多余高能态，最终的合磁矩 M_{0} 在+z方向，并在平衡下满足： M_{0}=\frac{\rho_{0}\gamma^{2}\hbar^{2}}{4kT}B_{0} 其中 \gamma 是Gyromagnetic
zhihu
www.zhihu.com
Polder tensor
described mathematically as:
Neglecting the effects of damping, the components of the tensor are given by
where
(rad / s) / (A / m) is the effective gyromagnetic
wikipedia.org
en.wikipedia.org
Nuclear magnetic moment
Gyromagnetic ratio
The gyromagnetic ratio, expressed in Larmor precession frequency , is of great relevance to nuclear magnetic resonance analysis. If divided instead by the reduced Planck constant, which is 2π less, a gyromagnetic ratio expressed in radians is obtained, which is greater by a factor
wikipedia.org
en.wikipedia.org
Solid-state nuclear magnetic resonance
The maximum dipolar coupling is given by the dipolar coupling constant d,
,
where γ1 and γ2 are the gyromagnetic ratios of the nuclei, is the reduced The splitting between the maxima (the "horns") of the pattern is equal to the dipolar coupling constant .:
where γ1 and γ2 are the gyromagnetic ratios
wikipedia.org
en.wikipedia.org
Spin diffusion
Another desirable effect is that the signal to noise ratio (S/N) is increased until a theoretical factor γA/γB, being γ the gyromagnetic ratio.
wikipedia.org
en.wikipedia.org
Larmor precession
is (for a particle of charge ) the gyromagnetic ratio, equal to , where is the mass of the precessing system, while is the g-factor of the system. The gyromagnetic ratios, which give the Larmor frequencies at a given magnetic field strength, have been measured and tabulated here.
wikipedia.org
en.wikipedia.org
Pulsed field gradient
on spin I, is considered to be a rotation around z-axis by an angle = γIGz; where Gz is the gradient magnitude (along the z-direction) and γI is the gyromagnetic
wikipedia.org
en.wikipedia.org