Isotope effect physics, turbulence and long-range correlation studies in the TJ-II stellarator

被引：21
|
作者：
Liu, B. [1 ,2 ]
Pedrosa, M. A. [1 ]
van Milligen, B. Ph. [1 ]
Hidalgo, C. [1 ]
Silva, C. [3 ]
Tabares, F. L. [1 ]
Zurro, B. [1 ]
McCarthy, K. J. [1 ]
Cappa, A. [1 ]
Liniers, M. [1 ]
机构：
[1] CIEMAT, Lab Nacl Fus, E-28040 Madrid, Spain
[2] Univ Carlos III Madrid, Dept Fis, Madrid 28911, Spain
[3] Univ Lisbon, Inst Super Tecn, Inst Plasmas & Fusao Nucl, Lisbon, Portugal
来源：
NUCLEAR FUSION | 2015年 / 55卷 / 11期
关键词：
isotope effect; zonal flow; plasma turbulence; long-range correlation (LRC); radial correlation length; stellarator;
D O I：
10.1088/0029-5515/55/11/112002
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The impact of isotope mass on the radial correlation length (L-r) and long-range correlation (LRC) of plasma turbulence has been investigated in electron cyclotron resonance heated (ECRH) low-density deuterium-hydrogen plasmas in the TJ-II stellarator. We find that the L-r increases with the deuterium/hydrogen (D/H) ratio. However, the amplitude of LRC decreases slightly with the D/H ratio, in contrast to previous results in tokamak plasmas Xu et al (2013 Phys. Rev. Lett. 110 265005). These findings show the impact of the isotope effect on both the largest scales (LRC determined by the size of the device) and the characteristic radial scale of turbulent structures.
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页数：4
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