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Title: Kinetic neoclassical calculations of impurity radiation profiles

Modifications of the drift-kinetic transport code XGC0 to include the transport, ionization, and recombination of individual charge states, as well as the associated radiation, are described. The code is first applied to a simulation of an NSTX H-mode discharge with carbon impurity to demonstrate the approach to coronal equilibrium. The effects of neoclassical phenomena on the radiated power profile are examined sequentially through the activation of individual physics modules in the code. Orbit squeezing and the neoclassical inward pinch result in increased radiation for temperatures above a few hundred eV and changes to the ratios of charge state emissions at a given electron temperature. As a result, analogous simulations with a neon impurity yield qualitatively similar results.
ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [2] ; ORCiD logo [3] ;  [4] ;  [5]
  1. Princeton Univ., Princeton, NJ (United States). Princeton Plasma Physics Lab.
  2. KAIST, Daejeon (South Korea)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. National Fusion Research Institute, Daejeon (South Korea)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC02-09CH11466; AC05-00OR22725; AC02-05CH11231
Accepted Manuscript
Journal Name:
Nuclear Materials and Energy
Additional Journal Information:
Related Information: The digital data for this paper can be found in; Journal ID: ISSN 2352-1791
Research Org:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org:
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; neoclassical transport; impurity radiation; coronal equilibrium; kinetic simulation; particle-in-cell; spherical torus
OSTI Identifier: