A permanent magnet assembly is disclosed that is adapted to provide a magnetic field across an arc-shaped gap. Such a permanent magnet assembly can be used, for example, to provide a time-varying magnetic field to an annular region for use in a magnetic refrigerator.
REFERENCE TO GOVERNMENT RIGHTS
This invention was made with Government support under Cooperative Agreement #DE-FC26-03NT41948 awarded by the United States Department of Energy. The Government has certain rights in the invention.