| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Magnetic Field Structure and Induced Electric Current Distribution on a Cylindrical Model: Application to Magnetic Nerve Stimulation |
| Taishi Okita, Toshiyuki Takagi |
| Institute of Fluid Science, Tohoku University, Aoba-ku, Sendai, 980-8577, Japan |
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| Cite this article: |
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Taishi Okita, Toshiyuki Takagi 2009 Chin. Phys. Lett. 26 074101 |
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Abstract We study the relation between the magnetic field structure and the induced electric-current distribution based on a cylindrical model composed of a uniform electrically conductive medium. When the time-varying magnetic fields are axisymmetrically applied in the axial direction of the model, the electric fields are induced around the central axis in accordance with Faraday's law. We examine the eddy-current distributions generated by loop-coils with various geometries carrying an alternating electric current. It is shown that the radial structure of the induced fields can significantly be controlled by the loop coil geometry, which will be suitable for practical use especially in magnetic nerve stimulation on bioelectromagnetics, if we appropriately place the exciting coil with optimum geometry.
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| Keywords:
41.20.Gz
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Received: 03 April 2009
Published: 02 July 2009
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| PACS: |
41.20.Gz
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(Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems)
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