| HL-2A芯部等离子体ITG模和TE模增长率研究 |
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| 引用本文： | 王亮,李新霞,龚学余. HL-2A芯部等离子体ITG模和TE模增长率研究[J]. 原子能科学技术, 2015, 49(6): 961-965. DOI: 10.7538/yzk.2015.49.06.0961 |
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| 作者姓名： | 王亮 李新霞 龚学余 |
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| 作者单位： | 1.南华大学 核科学技术学院，湖南 衡阳421001；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： | 本文基于双流体模型,通过理论分析获得了芯部离子温度梯度(ITG)模和俘获电子(TE)模的色散关系。在Weiland模型的基础上,考虑了离子平行方向速度和TE的影响,计算了碰撞对ITG模和TE模增长率的影响。对HL-2A等离子体的计算结果表明,芯部等离子体的ITG模和TE模增长率与扰动波数密切相关,磁剪切对ITG模有明显的抑制作用。
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| 关 键 词： | 等离子体 增长率 离子温度梯度模 俘获电子模 |
Study on Growth Rate of ITG and TE Modes in HL-2A Core Plasma |
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| WANG Liang,LI Xin-xia,GONG Xue-yu. Study on Growth Rate of ITG and TE Modes in HL-2A Core Plasma[J]. Atomic Energy Science and Technology, 2015, 49(6): 961-965. DOI: 10.7538/yzk.2015.49.06.0961 |
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| Authors: | WANG Liang LI Xin-xia GONG Xue-yu |
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| Affiliation: | 1.School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;2.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | Based on the two-fluid model, the dispersion relation of ion temperature gradient (ITG) mode and trapped electron (TE) mode was analyzed theoretically. Based on Weiland model, the effect of collision on the growth rate of ITG mode and TE mode was studied with the consideration of ion parallel velocity and TE. The calculation result based on HL-2A shows that the growth rate of ITG and TE modes in core plasma is closely related to perturbed wave number. Moreover, the growth rate of ITG mode is proved to decrease in the presence of magnetic shear. |
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| Keywords: | plasma growth rate ion temperature gradient mode trapped electron mode |
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