field gradient


Also found in: Medical.

field gradient

[′fēld ‚grād·ē·ənt]
(physics)
A vector obtained by applying the del operator to a scalar field.
A tensor obtained by dyadic multiplication of the del operator with a vector field.
References in periodicals archive ?
Applied magnetic field and magnetic field gradient together with the vascularization of target region are particularly important when considering the distance from the magnets to the locations where particles are still effectively captured [8].
Charge and mass transport in the phenol-2,4-disulfonic acid-polyvinyl alcohol ion exchange membranes studied by pulsed field gradient NMR and impedance spectroscopy.
The external magnetic field and field gradient can guide cells to sites of injury and, using MRI, the iron-oxide superparamagnetic nanoparticles can be visualized as they travel to the site of injury.
Nmr Should Have Pulse Field Gradient (pfg) Capability.
Consequently, we achieved a maximum accelerating electric field gradient of 41 MV/m (performance required for ILCs: at least 35 MV/m).
Magnetic field gradient also contribute significantly to the corrosion behaviors of ferromagnetic materials.
With a saturation magnetization of ~20 emu/g, dMNP-DTPA conjugates can be easily manipulated and separated from solution in less than 1 min by applying an external magnetic field with a field gradient of above 300 G/mm.
He found that while the effect was small, the material was able to generate a cooling effect in response to a moderate magnetic field gradient.
As described above, to determine the effect of the gravity field gradient along a levelling profile to the levelling results, the height increments measured need to be converted into geopotential numbers, if necessary, adjusted and later converted to conventional normal height values.
The magnetic field gradient influences the flame behaviour (shapes, sizes), rate of heat production and combustion efficiency (Nagaraju 2005; Swaminathan 2005).
There will be a force drawing the steel sphere into the centre of the gap, since there exists a magnetic field gradient in every direction away from this center-point.