JPS6486954A - Magnetic field generator - Google Patents
Magnetic field generatorInfo
- Publication number
- JPS6486954A JPS6486954A JP62244034A JP24403487A JPS6486954A JP S6486954 A JPS6486954 A JP S6486954A JP 62244034 A JP62244034 A JP 62244034A JP 24403487 A JP24403487 A JP 24403487A JP S6486954 A JPS6486954 A JP S6486954A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic field
- high permeability
- materials
- magnetic pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To obtain a strong and uniform magnetic field, by magnetically coupling a permanent magnet with the magnetic pole piece opposed thereto so as to form a gap by a yoke heel piece and forming the magnetic pole piece by laminating a high permeability magnetic material and a magnetic composite material in a magnetic path direction to arrange the high permeability magnetic material so as to allow the same to face to the gap. CONSTITUTION:A pair of permanent magnets are formed by fixing magnetic pole pieces 9, 10 to one surfaces of permanent magnets 7, 8 and the magnetic pole pieces 9, 10 are formed by together using magnetic composite materials 11, 12 having high specific resistance composed of a magnetic powder such as an iron or iron alloy powder and an electric insulating binder material such as rubber or resin and magnetic materials 13, 14 having high permeability such as pure iron or soft iron and laminating both materials 11, 12 and 13, 14 so that the high permeability magnetic materials 13, 14 are arranged at positions faced to a gap 16 where a magnetic field is formed. By the aforementioned constitution, the rising and falling times of a pulse magnetic field are suppressed to the min. as a magnetic field generator for MRI and a strong and uniform magnetic field can be formed by the relatively small magnetic pole pieces.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62244034A JP2557905B2 (en) | 1987-09-30 | 1987-09-30 | Magnetic field generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62244034A JP2557905B2 (en) | 1987-09-30 | 1987-09-30 | Magnetic field generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6486954A true JPS6486954A (en) | 1989-03-31 |
JP2557905B2 JP2557905B2 (en) | 1996-11-27 |
Family
ID=17112725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62244034A Expired - Lifetime JP2557905B2 (en) | 1987-09-30 | 1987-09-30 | Magnetic field generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2557905B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5706575A (en) * | 1994-09-22 | 1998-01-13 | The Regents Of The University Of California | Method of making eddy current-less pole tips for MRI magnets |
JP2007536041A (en) * | 2004-05-07 | 2007-12-13 | エサオテ ソチエタ ペル アチオニ | Magnet structure of MRI apparatus and MRI apparatus |
JP2008061940A (en) * | 2006-09-11 | 2008-03-21 | Hitachi Ltd | Electronic spin resonance ct |
CN103048176A (en) * | 2012-12-13 | 2013-04-17 | 宁波大学 | Magnetic composite micro-particle suspension segregation device applicable to chemical laboratory |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107731446A (en) * | 2017-11-16 | 2018-02-23 | 北京中科三环高技术股份有限公司 | A kind of open type permanent magnetic device |
-
1987
- 1987-09-30 JP JP62244034A patent/JP2557905B2/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5706575A (en) * | 1994-09-22 | 1998-01-13 | The Regents Of The University Of California | Method of making eddy current-less pole tips for MRI magnets |
JP2007536041A (en) * | 2004-05-07 | 2007-12-13 | エサオテ ソチエタ ペル アチオニ | Magnet structure of MRI apparatus and MRI apparatus |
JP4783362B2 (en) * | 2004-05-07 | 2011-09-28 | エサオテ ソチエタ ペル アチオニ | Magnet structure of MRI apparatus and MRI apparatus |
JP2008061940A (en) * | 2006-09-11 | 2008-03-21 | Hitachi Ltd | Electronic spin resonance ct |
CN103048176A (en) * | 2012-12-13 | 2013-04-17 | 宁波大学 | Magnetic composite micro-particle suspension segregation device applicable to chemical laboratory |
Also Published As
Publication number | Publication date |
---|---|
JP2557905B2 (en) | 1996-11-27 |
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