A Side Extraction PIG Ion Source with Permanent Magnetic Mirror Field

The present work describes the principle, structure and experimental results of a side extraction PIG ion source with permanent magnetic mirror type field. The source is light and handy with low power consumption and high ionization efficiency. In the experiments using BF3, N2 and Ar, total beam current of 1-2 ma can be obtained with 50-150 watt arc power. The relative yields of 11B+, 14N+, 40Ar2+, 11B2+ and 14N2+ are 50-60%, 70-80%, 20-30%, 5% and 7% that of total beam, respectively. 11B3+, 14N5+ and 40Ar6+ are also measurable. In addition, a multicathode side extraction PIG ion source has been developed, in which a new extracting way called ACE (anode-cathode-extraction electrode) are used.