| 摘要 |
PURPOSE:To enable a troidal electric field to be produced even in a narrow space without causing any strain by installing concentric arc-like linear electrodes symmetrical relative to the central horizontal line over the facing surfaces of a pair of electric resistances. CONSTITUTION:Thin base plates 2 and 2' made of an insulating material such as a ceramic are respectively attached to the facing surfaces of magnets 1 and 1' which are located parallel to each other at a given interval with spacers (Sa) and (Sb) interposed. The base plates 2 and 2' have an arc-like shape extending along the central path for ions, and thin resistance films are applied to the facing surfaces of the base plates 2 and 2'. On each of the resistance films, n concentric arc-like electrodes (A1-An) or (B1-Bn) with 0.5mm width are arranged at a pitch of 0.5mm. Information about an electric potential to be applied to each electrode to produce a troidal electric field is stored in a memory 4. A power supply 3 applies voltage based on the above information to each electrode. Owing to the above structure, the troidal electric field based on the information stored in the memory 4 is produced in the space surrounded by the electrodes. |
