3.5 magnetic resonance imaging device (MRI)

magnetic resonance imaging is to use the human body in the nuclei of hydrogen plus scanning and magnetic field forever under the NMR signal of the determination of its parameters can be the organization of the human body and the symptoms arising from the changes, as shown images Bias out, so as to achieve the purpose of diagnosis. Its source of the magnetic field (a), superconducting electromagnets, (b) general electromagnet, (c) permanent magnet three. Permanent magnet flux leakage body is the smallest equipment, covering at least, the lowest operating cost advantages, and image quality than the superconducting worse than electromagnetic better. Especially the emergence of NdFeB magnets, promoting the development of the MRI, small permanent magnet MRI has become more likely. Using ferrite, the device weighs 100 tons, with NdFeB, only 10 tons. The world has been installed on the use of MRI NdFeB reached about 1,000 units.
¤ö At present, China's rare earth permanent magnet has begun work on the development of MRI and have made great progress.

3.6 electron beam focusing, microwave devices

focused electron beam in the field of rare earth permanent magnet application mainly in the various accelerator mass spectrometer and microwave devices. As such the use of high temperature environment, which tends to be used Sm Co of a rare earth permanent magnet. Typical applications for cyclical Magnet (REPM), the electron beam or other particle beam focused by a magnet, such as the direction of change.

Tags: neodymium magnets Rare Earth Magnets,magnet,permanent magnet Smco magnets