通过实验摸索了小型PIG型离子源的磁路和结构,对离子源的放电电流和尺寸关系找到了一些最佳值。利用强磁场和非均匀磁场提高了等离子体密度。在(?)16×10(毫米)的放电小室中(在气压<1.5×15~(-5)(?)条件下)获得了300微安以上的放电电流,解决了制造小直径中子管的一个难题。 Through the experiment, we explored the magnetic circuit and structure of the small-sized PIG ion source, and found some optimal values ​​for the relationship between the discharge current and the size of the ion source. The use of strong and non-uniform magnetic fields increases the plasma density. A discharge current of 300 microamperes or more was obtained in a discharge cell of 16 × 10 (mm) under a pressure of <1.5 × 15 -5 (?), Which solved the problem of manufacturing a small diameter neutron tube A problem