| 摘要 |
PURPOSE: A gradient magnetic field intensity control which uses copper and a magnetic field is provided to shield the magnetic field in a specific part by arranging a copper plate at an interval which is within 1 cm from a magnetism origin. CONSTITUTION: A magnet is arranged. A copper plate which has a hole of 0.1 ~ 1 mm is arranged at a first fixed interval. A copper plate which has a hole of 0.1 ~ 1 mm is arranged at a second fixed interval from the magnet. |
