| 螺旋天线轴向长度对螺旋波传播、吸收的影响 |
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| 引用本文： | 杜丹,李帅,阳璞琼,冯军,向东,龚学余.螺旋天线轴向长度对螺旋波传播、吸收的影响[J].计算物理,2021,38(6):713-721. |
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| 作者姓名： | 杜丹 李帅 阳璞琼 冯军 向东 龚学余 |
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| 作者单位： | 1. 南华大学数理学院, 湖南 衡阳 4210012. 南华大学电气工程学院, 湖南 衡阳 4210013. 南华大学机械工程学院, 湖南 衡阳 4210014. 南华大学核科学技术学院, 湖南 衡阳 421001 |
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| 基金项目： | 国家自然科学基金(11205086);国家自然科学基金(11675073);湖南省自然科学基金(2020JJ4515);湖南省教育厅重点项目(20A432);湖南省核聚变国际科技创新合作基地(2018WK4009);衡阳市重点实验室项目(2018KJ108);南华大学核燃料循环技术与装备湖南省协同创新中心开放基金项目(2019KFY23);南华大学核燃料循环技术与装备湖南省协同创新中心开放基金项目(2019KFZ10) |
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| 摘 要： | 采用有限元法数值求解Maxwell方程组，分析H-1仿星器实验参数下螺旋天线的轴向长度对螺旋波传播、吸收的影响。计算结果表明：随着螺旋天线轴向长度的增加，天线总辐射能量和辐射电阻逐渐增大；在H-1等离子体中螺旋天线主要激发m=±1模式波，其中m=-1模式波一般在等离子体边界传播；全波螺旋激发的波能量主要沉积在等离子体边界，导致等离子体径向能量较强的非均匀吸收，加热效果不理想；半波螺旋天线激发的波可深入主等离子体区域传播，等离子体径向能量吸收相对均匀，加热效果好。
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| 关 键 词： | 螺旋波 H-1仿星器 螺旋天线 有限元 |
| 收稿时间： | 2020-12-21 |
Helicon Waves Propagation and Absorption: Effect of Axial Length of Helical Antenna |
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| DU Dan,LI Shuai,YANG Puqiong,FENG Jun,XIANG Dong,GONG Xueyu.Helicon Waves Propagation and Absorption: Effect of Axial Length of Helical Antenna[J].Chinese Journal of Computational Physics,2021,38(6):713-721. |
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| Authors: | DU Dan LI Shuai YANG Puqiong FENG Jun XIANG Dong GONG Xueyu |
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| Institution: | 1. Department of Mathematics and Physics, University of South China, Hengyang, Hunan 421001, China2. Department of Electrical Engineering, University of South China, Hengyang, Hunan 421001, China3. Department of Mechanical Engineering, University of South China, Hengyang, Hunan 421001, China4. Department of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China |
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| Abstract: | Helicon waves propagation and absorption of helical antenna is studied by solving Maxwell equations with finite element method and experimental parameters of H-1 stellarator. As axial length of helical antenna increases, total radiation resistance and radiation energy of the antenna increase as well. In H-1 plasma, helical antenna mainly excites m=±1 waves, and the m=-1 waves spread generally at the plasma boundary. Energy of the excited modes of full-wavelength helical antenna is mainly deposited at plasma boundary, which causes inhomogeneous radial energy absorption and heating. Excited waves of half-wavelength helical antenna penetrate deeply into the bulk plasma, which leads to relatively uniform radial energy absorption and heating. |
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| Keywords: | helicon wave H-1 stellarator helical antenna finite element |
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