超声分子束注入驱动撕裂模物理机制研究
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- 英文论文题名：Investigation of tearing mode induced by supersonic molecular beam injection
- 论文作者：张博宇 ; 石中兵 ; 钟武律 ; 宋显明 ; 陈程远 ; 季小全 ; 董云波 ; 杨曾辰 ; 蒋敏 ; 宋啸
- 英文论文作者：ZHANG Bo-yu ; SHI Zhong-bing ; ZHONG Wu-lv ; SONG Xian-ming ; CHEN Cheng-yuan ; JI Xiao-quan ; DONG Yun-bo ; YANG Zeng-chen ; JIANG Min ; SONG Xiao ; Southwestern Institute of Physics ; Xi Hua University
- 年：2015
- 作者机构：核工业西南物理研究院;西华大学;
- 论文关键词：撕裂模 ; 磁岛 ; 超声分子束注入 ; 温度梯度
- 英文论文关键词：tearing mode ; magnetic island ; SMBI ; temperature gradient
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第7册（计算物理分卷、核物理分卷、粒子加速器分卷、核聚变与等离子体物理分卷、脉冲功率技术及其应用分卷、辐射物理分卷）
- 语种：中文
- 分类号：TL631.24
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：6
- 文件大小：555k
- 原文格式：O
- 会议级别：全国
摘要
撕裂模形成的物理机制是托卡马克等离子体物理研究中的一个重要课题。撕裂模通常会增大等离子体径向输运,严重破坏等离子体约束,甚至造成等离子体破裂。在HL-2A装置上一定的超声分子束注入条件下,观察到在q=2面附近形成磁岛宽度达到10 cm的2/1撕裂模,进一步研究发现超声分子束注入在减小了q=2面附近的温度,增大电阻率的同时,增大了q=2面附近的温度梯度,从而改变了电流密度分布。初步的理论分析表明其增大了撕裂模不稳定性因子,使其达到了撕裂模不稳定性的增长条件,开始磁重联并最终形成磁岛。
The physical mechanism of the formation of tearing mode is studied on HL-2A Tokamak.A 2/1 tearing mode induced by excessive supersonic molecular beam injection(SMBI) was observed near q=2 surface with a 10 cm magnetic island width.Temperature was found to be decreased because of the cold pulse caused by SMBI.Temperature gradient was also observed to be increased near q=2 surface after SMBI,changing radial profile of current density.Theoretical analysis shows that the plasma resistivity and instability factor were growing,which met the tearing mode instability condition,leading to magnetic reconnection and forming the magnetic island.
The physical mechanism of the formation of tearing mode is studied on HL-2A Tokamak.A 2/1 tearing mode induced by excessive supersonic molecular beam injection(SMBI) was observed near q=2 surface with a 10 cm magnetic island width.Temperature was found to be decreased because of the cold pulse caused by SMBI.Temperature gradient was also observed to be increased near q=2 surface after SMBI,changing radial profile of current density.Theoretical analysis shows that the plasma resistivity and instability factor were growing,which met the tearing mode instability condition,leading to magnetic reconnection and forming the magnetic island.
引文
[1]何志雄.反常电子黏滞性引起的双撕裂模研究[D].北京:清华大学,2010.
[2]John Wesson.Tokamaks[M].3~(rd)ed.New York:Oxford University Press,2004.
[3]Zohm H,Maraschek M,Pautasso G,et al.MHD stability and disruption physics in ASDEX Upgrade[J].Plasma Physics and Controlled Fusion,1995,37(11A):A313.
[2]John Wesson.Tokamaks[M].3~(rd)ed.New York:Oxford University Press,2004.
[3]Zohm H,Maraschek M,Pautasso G,et al.MHD stability and disruption physics in ASDEX Upgrade[J].Plasma Physics and Controlled Fusion,1995,37(11A):A313.