Heliyon (Sep 2020)

Experimental study of perturbative particle transport in the HL-2A tokamak

  • B.Y. Zhang,
  • S. Inagaki,
  • Z.B. Shi,
  • W.L. Zhong,
  • X.L. Zou,
  • M. Jiang,
  • Z.C. Yang,
  • P.W. Shi,
  • C.Y. Chen,
  • G.L. Xiao,
  • B.B. Feng,
  • X.M. Song

Journal volume & issue
Vol. 6, no. 9
p. e04633

Abstract

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Perturbative particle transport experiment has been performed in the HL-2A tokamak by using supersonic molecular beam injection (SMBI) as an external particle source. The spatiotemporal evolution of edge density perturbation is traced and the particle source and the flux-gradient relation are obtained experimentally. The flux-gradient relation is found to be far from the diffusive model and three different transport processes are revealed, including pinch-dominant process, diffusion-pinch process and intermittent decays.

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