An open magnet utilizing ferro-refraction current magnification |
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Authors: | Pulyer Yuly Hrovat Mirko I |
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Affiliation: | Department of Radiology, Brigham and Women's Hospital, 75 Francis Street, Boston, Massachusetts 02115, USA. |
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Abstract: | Ferro-refraction is the field magnification that is obtained when a current segment is near a high magnetic permeable boundary. It is shown that ferro-refraction may be used in the design of magnets for NMR or MRI to increase the efficiency of these magnets. The field may be modeled analytically with the Biot--Savart law and the inclusion of mirror image currents. Ferro-refraction is particularly useful in the design of monohedral magnets, magnets producing a remote homogeneous region which have the magnetic sources arranged to one side. These magnets have also been called planar magnets. Two designs for a monohedral magnet which produce good agreement between experimental and analytic results are presented. |
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Keywords: | Abbreviations: ferro-refractionAbbreviations: magnetAbbreviations: monohedralAbbreviations: planarAbbreviations: magnetic refractionAbbreviations: mirror image |
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