Measurement of a 2D fast-ion velocity distribution function by tomographic inversion of fast-ion D-alpha spectra
作者: M. SalewskiB. GeigerA.S. JacobsenM. García-MuñozW.W. HeidbrinkS.B. KorsholmF. LeipoldJ. MadsenD. MoseevS.K. NielsenJ. RasmussenM. StejnerG. TardiniM. Weilandthe ASDEX Upgrade Team
作者单位: 1Association Euratom - DTU, Technical University of Denmark, Department of Physics, DK-2800 Kgs. Lyngby, Denmark
2Association Euratom - Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany
3Department of Physics, University of Seville, Seville, Spain
4University of California, Department of Physics and Astronomy, Irvine, CA 92697, USA
刊名: Nuclear Fusion, 2014, Vol.54 (2)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0029-5515/54/2/023005
原始语种摘要: We present the first measurement of a local fast-ion 2D velocity distribution function f ( v , v ). To this end, we heated a plasma in ASDEX Upgrade by neutral beam injection and measured spectra of fast-ion D α (FIDA) light from the plasma centre in three views simultaneously. The measured spectra agree very well with synthetic spectra calculated from a TRANSP/NUBEAM simulation. Based on the measured FIDA spectra alone, we infer f ( v , v ) by tomographic inversion. Salient features of our measurement of f ( v , v ) agree reasonably well with the simulation: the measured as well as the simulated f ( v , v ) are lopsided towards negative velocities parallel to the magnetic field,...
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关键词翻译
关键词翻译
  • inversion 倒转
  • velocity 速度
  • measured 量过的
  • spectra 光谱
  • distribution 分布
  • measurement 测量
  • simulation 模拟
  • injection 贯入
  • simultaneously 同时地
  • lopsided 倾斜边的