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目前,一些科学和技术部门广泛地应用中性束技术,特别是在受控核聚变研究中,采用强流中性束注入是维持和加热等离子体的主要方法之一。可用两种方法获得中性束,其一是正离子束通过靶物质捕获电子,其二是用靶物质剥离负离子束的电子。我们曾用30—100keV氢离子束与气体靶、碱金属蒸气靶相互作用获得中性束,并进行了测量。本文用氢离子束通过等离子体靶获得中性束,进一步探索提高中性粒子产额的方法。初步测定了氢离子束与氩等离子体靶作用的电荷交换中性化效率,并对中性化机理作初步探讨。
At present, some science and technology departments apply the neutral beam technology widely. Especially in the controlled nuclear fusion research, the use of strong current neutral beam injection is one of the main methods to maintain and heat the plasma. The neutral beam can be obtained in two ways. One is that the positive ion beam captures electrons through the target material and the other strikes off the negative ion beam electrons with the target material. We used a 30-100 keV hydrogen ion beam to interact with a gas target, an alkali metal vapor target to obtain a neutral beam and measured. In this paper, a neutral beam is obtained by a plasma target using a hydrogen ion beam to further explore ways to increase the neutral particle yield. The charge exchange neutralization efficiency of hydrogen ion beam and argon plasma target was preliminarily determined, and the mechanism of neutralization was also discussed.