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中文摘要：
理论分析了负氢离子体积产生机制，采用自主开发的三维PIC—MCC模拟软件，对多峰磁场约束的负氢离子源进行数值模拟研究。模拟了引出磁场、放电初始能量、及放电位置对振动激发碰撞效率的影响，探索了多峰负氢离子源的优化手段。研究表明：如果进入引出区的快电子越多且-y方向漂移越剧烈，那么振动碰撞越频繁且相对碰撞率越高，即负氢离子体积产生效率越高。
英文摘要：
The mechanism of the negative hydrogen ion volume production is analysed theoretically. The negative hydrogen ion source restrained by multi-peak megnetie field was numerically simulated with self-developed 3D simulation software PIC-MCC, in which the influence of leading-out megnetic field, primary energy and position of discharge on the collision efficiency excited by vibration are simulated. The optimization means for the multi-peak negative hydrogen ion source are explored. The re- suits show that the more the fast electrons move into the extraction region and the more severe the negative y-direction drift is, the more frequent the vibrational excitation collision happens and the higher the relative collision rate becomes, in other word, the hi~her the volume production efficiency of negative hydrogen ions appears.
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