氧、氯负离子在氢等离子体中输运过程研究

项目名称： 氧、氯负离子在氢等离子体中输运过程研究

项目编号： No.11505087

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 邱玺玉

作者单位： 兰州大学

项目金额： 22万元

中文摘要： 近年来，离子束在等离子体中的输运过程研究吸引了很多研究者的兴趣，这与离子束和冷靶间的相互作用有很大的不同。同时，这也是惯性约束核聚变和磁约束核聚变研究中的一个关键问题。国内国际上许多等离子体研究者在理论计算以及实验测量方面都作了大量有意义的工作。截止目前，该领域的研究主要集中在高电荷态离子与等离子体相互作用过程，而尚未有研究负离子在等离子体中输运过程的报道。本课题将对氧、氯等负离子在氢等离子体中的输运机制开展探索性的研究，以期能够基于二维PIC模型开发蒙特卡洛程序对负离子在等离子体中的电荷转移、能量沉积、出射角分布以及负离子对等离子体状态的影响有一定的了解，为开展后续相关实验提供借鉴与指导。这方面的研究也将对等离子体与物质表面相互作用过程中产生负离子束的应用有指导意义。

中文关键词： 负离子输运；电荷转移；能量沉积；出射角分布

英文摘要： Most recently, the interaction between ion beams and the plasma has attracted a lot of research interests, since it has much difference with the interaction between ion beams and cold matter. Meanwhile, this is also a key question in the study of both Inertial Confinement Fusion (ICF) and Magnetic Confinement Fusion (MCF). Researchers have conducted lots of efforts on this field and got many exciting achievements both theoretically and experimentally. Up to now, most research are focused on the highly charged ion beams interact with the plasma while no reports on the study of the interaction between negative ion beams and the plasma. This project intend to investigate the interaction mechanism between O、Cl negative ion beam and hydrogen plasma, by means of a Monte Carlo code based on the 2D Particle-in-cell model, to conduct a research about the charge transfer、energy deposition and emit angle distribution of the projectile beam, which will provide useful information and guide to the later experimental study planned. Moreover, we want to also investigate the impact to the plasma once the negative ions are involved in . This research will also can help to make better application of the negative ion beam which induced by the plasma-surface interaction.

英文关键词： negative ion transportation;charge transfer;energy deposition;emit angle distribution