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The metallic sphere in a uniform ac magnetic field: A simple and precise experiment for exploring eddy currents and non-destructive testing
(American Association of Physics Teachers, 2018-06)
We describe a very simple experiment that utilizes standard laboratory equipment to measure the electromagnetic response of a metallic sphere exposed to a uniform ac magnetic field. Measurements were made for a variety of ...
A fast MOSFET rf switch for low-field NMR and MRI
(Elsevier, 2019-11-02)
TRansmit Array Spatial Encoding (TRASE) MRI uses trains of rf pulses alternately produced by distinct
transmit coils. Commonly used coil switching involving PIN diodes is too slow for low- and ultra-lowfield
MRI and would ...
Passive magnetic shielding in static gradient fields
(American Institute of Physics, 2014)
The effect of passive magnetic shielding on dc magnetic field gradients imposed by both external and internal sources is studied for two idealized shield models: concentric spherical and infinitely-long cylindrical shells ...