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LI Yingying, FU Jia, SHI Yuejiang, WANG Fudi, ZHANG Wei, TI Ang, XU Ping, HUANG Yiyu. Investigation of Ion Temperature Characteristics in the HT-7 Tokamak[J]. Plasma Science and Technology, 2011, 13(5): 535-540.
Citation: LI Yingying, FU Jia, SHI Yuejiang, WANG Fudi, ZHANG Wei, TI Ang, XU Ping, HUANG Yiyu. Investigation of Ion Temperature Characteristics in the HT-7 Tokamak[J]. Plasma Science and Technology, 2011, 13(5): 535-540.
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Investigation of Ion Temperature Characteristics in the HT-7 Tokamak

  • Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Funds: supported by the Instruments R&D Project of the Chinese Academy of Sciences (title: Active Beam Spectra Diagnostic), partially supported by National Natural Science Foundation of China ( Nos. 10725523, 10975155), the ITER Relevant Foundation in China _ (No. 2009GB104003).
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  • Received Date: January 10, 2011
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    • Abstract
  • Characteristics of ion temperature measured with Charge-Exchange Recombination Spectroscopy (CXRS) were studied in Ohmic, Lower-Hybrid-Wave (LHW) driven and Ion-Cyclotron-Resonance-Frequency (ICRF) heated plasmas in HT-7. The results indicate that the central ion temperature Ti0 follows the one-third power law in the product of central line-averaged density`ne and plasma current Ip in Ohmic discharges and is therefore consistent with the Artsimovich scaling law Ti0= K× (Ip×Bt×`ne ×R2)1/3. It is shown that there is an appreciable increase of ion temperature during the operation with both LHW and ICRF and that the increment of ion temperature in those shots is mainly due to the energy transfer via collisions between ions and electrons rather that by direct heating of the ions.
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