Target Field Design for Magic Angle Gradient Coils
โ Scribed by Thomas M. Barbara; Charles E. Bronnimann
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 62 KB
- Volume
- 140
- Category
- Article
- ISSN
- 1090-7807
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โฆ Synopsis
The target field method of designing gradient coils is extended to the case where the gradient producing currents lie on cylinders of a general orientation with respect to the polarizing magnetic field. This provides a general approach for designing coils that require unusual sample geometries such as those required for magic angle spinning (MAS) applications. A detailed example of a magic angle gradient coil set for MAS is given.
๐ SIMILAR VOLUMES
## Abstract Designing gradient coils for permanent magnets requires modeling the interaction between the currents and the ferromagnetic material. We have developed and tested an iterative design approach based on the boundary element method. The power dissipated by the gradient coil is treated as a
Magnetic field gradients have proven useful in NMR for coherence pathway selection, diffusion studies, and imaging. Recently they have been combined with magic angle spinning to permit high-resolution measurements of semi-solids, where magic angle spinning averages any residual dipolar couplings and