| HT-7托卡马克等离子体逃逸电子螺旋角散射研究 |
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| 引用本文： | 卢洪伟,查学军,钟方川,周瑞杰,胡立群.HT-7托卡马克等离子体逃逸电子螺旋角散射研究[J].原子能科学技术,2013,47(5):711-716. |
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| 作者姓名： | 卢洪伟 查学军 钟方川 周瑞杰 胡立群 |
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| 作者单位： | 1.东华大学 应用物理系 磁约束核聚变教育部研究中心，上海201620；2.中国科学院 等离子体物理研究所，安徽 合肥230031 |
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| 摘 要： | 在托卡马克等离子体中，相同的等离子体电流条件下，若在较低的等离子体密度条件下发生反常多普勒共振，将会导致逃逸电子快螺旋角散射（FPAS）的发生；若在较高的等离子体密度条件下发生反常多普勒共振，则会导致逃逸电子正常螺旋角散射（NPAS）的发生。通过研究FPAS和NPAS条件下的逃逸电子行为，发现FPAS和NPAS均可一定程度增加逃逸电子的螺旋角，增加逃逸电子的同步辐射损失，减小逃逸电子的能量；且NPAS和FPAS对逃逸电子的影响主要集中在高能部分，对低能逃逸电子的影响较小。
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| 关 键 词： | 托卡马克 反常多普勒共振 逃逸电子 螺旋角 |
Investigation of Runaway Electrons Pitch Angle Scattering in HT-7 Tokamak |
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| LU Hong-wei,ZHA Xue-jun,ZHONG Fang-chuan,ZHOU Rui-jie,HU Li-qun.Investigation of Runaway Electrons Pitch Angle Scattering in HT-7 Tokamak[J].Atomic Energy Science and Technology,2013,47(5):711-716. |
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| Authors: | LU Hong-wei ZHA Xue-jun ZHONG Fang-chuan ZHOU Rui-jie HU Li-qun |
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| Affiliation: | 1.Magnetic Confinement Fusion Research Center, Ministry of Education,Department of Applied Physics, Donghua University, Shanghai 201620, China; 2.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | The fast pitch angle scattering (FPAS) of runaway electrons will happen if the anomalous Doppler resonance occurs in low density plasmas, while the normal pitch angle scattering (NPAS) will happen if the anomalous Doppler resonance occurs in high density plasmas with the same plasma current. The runaway electron behaviors during FPAS and NPAS plasmas were investigated. It is found that, in FPAS and NPAS plasmas, the synchrocyclotron emission of the runaway electrons increases because of the increase of the pitch angle of the runaway electrons. Therefore, the energy of runaway electrons decreases. The FPAS and NPAS have more effective influence on high energy runaway electrons than low energy ones. |
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| Keywords: | Tokamak anomalous Doppler resonance runaway electron pitch angle |
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