| 摘要 |
Permanent magnets are built into the electrode grating structure, so that the charged particles of the plasma are deflected away from the grating structure into extraction holes, so that the grating structure is protected against wear. By localizing gas discharge in the region of the extraction magnetic fields, the extraction surfaces can be made by a combination of repeated individual elements including magnet structures, mechanical carrying structures, local gas discharge structures and extraction openings.
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