| 环位形下鱼骨模驱动快离子输运的数值模拟研究 |
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| 引用本文： | 王雍钦,郝广周,虞立敏,苗雨田,柯 锐,邹云鹏,高庆弟.环位形下鱼骨模驱动快离子输运的数值模拟研究[J].核聚变与等离子体物理,2022,42(4):440-447. |
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| 作者姓名： | 王雍钦 郝广周 虞立敏 苗雨田 柯 锐 邹云鹏 高庆弟 |
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| 作者单位： | (1. 核工业西南物理研究院，成都 610041；2. 华东理工大学，上海 200000；3. 大连理工大学，大连 116024) |
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| 基金项目： | 国家自然科学基金(11775067) |
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| 摘 要： | 考虑包含动理学效应的鱼骨模结构，使用导心轨道程序 ORBIT，在磁面坐标下研究了不同的扰动模
幅度、频率对快离子再分布的影响，并分析了粒子与扰动发生共振的条件。模拟得出，鱼骨模扰动会使快离子在
实空间、相空间中发生再分布，芯部( ψp/ψ w≤0.2 ，ψp 为极向磁通，ψw 为最后一个闭合磁面的磁通)快离子密
度下降约 20%，中间磁面位置上( ψp/ψ w≥0.2，ψp/ψ w≤ 0.6)的快离子密度增加约 7%；通过扫描频率发现，相空间中快
离子的再分布对模式频率敏感，并分析了快离子与鱼骨模扰动共振的条件。
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| 关 键 词： | 鱼骨模 再分布 相空间 共振 |
| 收稿时间： | 2020-12-07 |
Numerical simulation of fast ion transport driven by fishbone
in toroidal configuration |
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| WANG Yong-qin,HAO Guang-zhou,YU Li-min,MIAO Yu-tian,KE Rui,ZOU Yun-peng,GAO Qing-di.Numerical simulation of fast ion transport driven by fishbone
in toroidal configuration[J].Nuclear Fusion and Plasma Physics,2022,42(4):440-447. |
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| Authors: | WANG Yong-qin HAO Guang-zhou YU Li-min MIAO Yu-tian KE Rui ZOU Yun-peng GAO Qing-di |
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| Institution: | (1. Southwestern Institute of Physics, Chengdu 610041;
2. East China University of Science and Technology, Shanghai 200000;
3. Dalian University of Technology, Dalian 116024) |
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| Abstract: | In this work, the influences of the fishbone amplitude and frequency on the fast ion redistribution
are investigated. The simulation indicates that the fishbone instability causes serious redistribution of fast ions in
both real space and phase space. The fast ion density decreases by ~20% in the core (ψp /ψw≤ 0.2 ) and
increases ~7% at the middle region of magnetic flux ( (ψp /ψw≤ 0.6，ψp /ψw≥0.2), where p is the poloidal magnetic
flux, and ψw is the magnetic flux at the last closed flux surface. Furthermore, by parameter scanning, it is found
that the redistribution of fast ions is sensitive to the fishbone frequency in the phase space. In addition, the
resonance conditions of fast ions and fishbone instability are analyzed. |
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| Keywords: | Fishbone Redistribution Phase space Resonance |
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