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为了满足14MeV回旋加速器对离子源的需求,设计了1台小型的H-多峰场离子源,其内腔直径为48mm,长为79.5mm。从离子源引出能量为25keV、流强3mA的H-离子束。1多峰场结构H-离子是由热灯丝发射的高能电子在弧压加速下与氢气分子(或H原子)相互碰撞产生的。为了增加电子与H2(或原子)碰撞几率和约束所形成的等离子体,提高中心轴附近的等离子体密
In order to meet the needs of the 14MeV cyclotron ion source, a small H-multimodal field ion source was designed with a lumen diameter of 48mm and a length of 79.5mm. The H-ion beam with an energy of 25 keV and a flow of 3 mA was extracted from the ion source. 1 Multimodal field structure H- ions are generated by the hot filament emitted by the high-energy electrons in the arc voltage acceleration and hydrogen molecules (or H atoms) collide with each other. In order to increase the probability of electron collisions with H2 (or atoms) and confine the formed plasma, the plasma near the central axis is increased