Effect of periodic gas-puffs on drift-tearing modes in ADITYA/ADITYA-U tokamak discharges
作者: Harshita RajTanmay MacwanKaushalender SinghSuman DoluiJoydeep GhoshNirmal K. BisaiK.A. JadejaK.M. PatelN.C. PatelR.L. TannaD. RajuS.K. JhaP.K. ChattopadhyayAbhijit SenY.C. SaxenaR. PalADITYA-U Team
刊名: Nuclear Fusion, 2020, Vol.60 (3)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/ab6810
原始语种摘要: The effect of a periodic train of short gas-puff pulses on the rotation frequency and amplitude of drift-tearing modes has been studied in ADITYA/ADITYA-U tokamak. The short gas puffs, injecting approximately molecules of fuel gas (hydrogen at one toroidal location, are found to concomitantly decrease the drift-tearing mode rotation frequency and the mode amplitude during the period of injection and then recover back to its initial values when the gas pulse is over. This leads to a periodic modulation of the rotation frequency and amplitude of the drift-tearing modes that is correlated with the periodicity of the gas pulse injection. The underlying mechanism for this change in the mode characteristic appears to be related to gas puff induced change in the radial profile of the plasma...
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  • tokamak 托卡马克
  • tearing 裂开
  • drift 水平巷道
  • periodic 周期的
  • modes 模式
  • rotation 旋转
  • diamagnetic 抗磁的
  • amplitude 振幅
  • change 变化
  • understand 理解