Quasi-static electric field in a cylindrical volume conductor induced by external coils.
An expansion technique based on modified Bessel functions is used to obtain an analytical solution for the electric field induced in a homogeneous cylindrical volume conductor by an external coil. The current in the coil is assumed to be changing slowly so that quasi-static conditions can be justified. Valid for any coil type, this solution is ideal for fast computation of the induced electric field at a large number of points. Efficient implementation of this method in a computer code is described and numerical results are presented for a perpendicular circular coil and a tangential double-square coil.
Electronics Department, Macquarie University, Sydney, NSW, Australia.
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Esselle
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Stuchly
D004553:Electric Conductivity; D004574:Electromagnetic Fields; D008959:Models, Neurological