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In tokamak plasmas, the discharge will turn into "runaway" discharge if the density decays to a critical one. The discharge will enter into "slide-away" discharge if the density reaches a lower level. The slide-away discharge is characterized by high confinement of superthermal electrons which constitute a large part of plasma current. In HT-7 Tokamak, the slide-away discharge is achieved by reducing the plasma density. The relationship between plasma current and critical density of slide-away discharge is investigated. It is also find that the increase of density in slide-away discharge can make the confinement of superthermal electrons poor and lots of superthermal electrons lost from the vacuum chamber.
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Keywords:
- slide-away discharge /
- tokamak /
- plasma /
- runaway electron
[1] Liu C L, Chen J F, Guo G C, 1984 Nuclear Fusion and Plasma Physics 4 150(in Chinese) [刘常禄、陈杰夫、郭干城 1984 核聚变与等离子体物理 4 150]
[2] Lu H W, Hu L Q, Jiang Y, Lin S Y 2008 High Power Laser and Particle Beams 20 747(in Chinese)[卢洪伟、胡立群、江 勇、林士耀 2008 强激光与粒子束 20 747]
[3] Xu W, Wan B N, Xie J K 2003 Acta Phys. Sin. 52 1970 (in Chinese) [徐 伟、万宝年、谢纪康 2003 52 1970]
[4] Yoshino R, Tokuda S 2000 Nucl. Fusion 40 1293
[5] Martin G 1998 Proceedings of the 25th EPS Conf. on Plasma Physics and Controlled Fusion, Prague, Czech Republic, 1998, Vol 22C Report p3-006
[6] Fredricson E D, Sabbagh S A, Bell M G 1997 Phys. Plasmas 4 1589
[7] Gill R D, Alper B, de Baar M 2002 Nucl. Fusion 42 1039
[8] Riccardo V 2003 Plasma Phys. Control. Fusion 45 A269
[9] Zhong G Q, Hu L Q, Zhu Y B, Lin S Y, Chen J Q, Xu P, Duan Y M, Lu H W 2009 Acta Phys. Sin. 58 3262 (in Chinese) [钟国强、胡立群、朱玉宝、林士耀、陈珏铨、许 平、段艳敏、卢洪伟 2009 58 3262]
[10] Yang J W, Guo G C, Zhang J L 1984 Nuclear Fusion and Plasma Physics 4 157(in Chinese) [杨进蔚、郭干城、张金岭 1984 核聚变与等离子体物理 4 157]
[11] Zheng Y Z, Qi C W, Ding X T, Li W Z 2006 Acta Phys. Sin. 55 294 (in Chinese) [郑永真、齐昌炜、丁玄同、郦文忠 2006 55 294]
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[1] Liu C L, Chen J F, Guo G C, 1984 Nuclear Fusion and Plasma Physics 4 150(in Chinese) [刘常禄、陈杰夫、郭干城 1984 核聚变与等离子体物理 4 150]
[2] Lu H W, Hu L Q, Jiang Y, Lin S Y 2008 High Power Laser and Particle Beams 20 747(in Chinese)[卢洪伟、胡立群、江 勇、林士耀 2008 强激光与粒子束 20 747]
[3] Xu W, Wan B N, Xie J K 2003 Acta Phys. Sin. 52 1970 (in Chinese) [徐 伟、万宝年、谢纪康 2003 52 1970]
[4] Yoshino R, Tokuda S 2000 Nucl. Fusion 40 1293
[5] Martin G 1998 Proceedings of the 25th EPS Conf. on Plasma Physics and Controlled Fusion, Prague, Czech Republic, 1998, Vol 22C Report p3-006
[6] Fredricson E D, Sabbagh S A, Bell M G 1997 Phys. Plasmas 4 1589
[7] Gill R D, Alper B, de Baar M 2002 Nucl. Fusion 42 1039
[8] Riccardo V 2003 Plasma Phys. Control. Fusion 45 A269
[9] Zhong G Q, Hu L Q, Zhu Y B, Lin S Y, Chen J Q, Xu P, Duan Y M, Lu H W 2009 Acta Phys. Sin. 58 3262 (in Chinese) [钟国强、胡立群、朱玉宝、林士耀、陈珏铨、许 平、段艳敏、卢洪伟 2009 58 3262]
[10] Yang J W, Guo G C, Zhang J L 1984 Nuclear Fusion and Plasma Physics 4 157(in Chinese) [杨进蔚、郭干城、张金岭 1984 核聚变与等离子体物理 4 157]
[11] Zheng Y Z, Qi C W, Ding X T, Li W Z 2006 Acta Phys. Sin. 55 294 (in Chinese) [郑永真、齐昌炜、丁玄同、郦文忠 2006 55 294]
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