Effects of collisions on impurity transport driven by electrostatic modes
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377820000537
Abstract: The turbulence-induced quasi-linear particle flux of a highly charged, collisional impurity species is calculated from the electrostatic gyrokinetic equation including collisions with the bulk ions and the impurities themselves. The equation is solved by an… read more here.
Keywords: impurity transport; collisions impurity; effects collisions; driven electrostatic ... See more keywords
Overview of core impurity transport in the first divertor operation of Wendelstein 7-X
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377823000417
Abstract: The impurity transport at Wendelstein 7-X during its most recent campaign is characterized and documented for a variety of different plasma scenarios. An overview of its dependence on several quantities is given, which allows identification… read more here.
Keywords: impurity transport; transport first; core impurity; overview core ... See more keywords
Numerical estimation of the oxygen impurity transport in the Aditya tokamak
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Plasmas"
DOI: 10.1063/1.5115230
Abstract: The present study illustrates an approach to solving the one-dimensional impurity transport equation in tokamak plasma, without the loss of generality, using a semi-implicit numerical method. The radial profiles of number density distribution of different… read more here.
Keywords: aditya tokamak; impurity transport; transport; number density ... See more keywords
Argon, neon, and nitrogen impurity transport in the edge and SOL regions of a tokamak
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Plasmas"
DOI: 10.1063/5.0142975
Abstract: Numerical simulations of the interchange plasma turbulence in the presence of medium-Z impurities (N2, Ne, and Ar) seeding have been performed using BOUT++. These simulation results are used to study the impurity transport mechanism in… read more here.
Keywords: impurity transport; sol regions; impurity; transport ... See more keywords
Modification of argon impurity transport by electron cyclotron heating in KSTAR H-mode plasmas
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aa5333
Abstract: Experiments with a small amount of Ar gas injection as a trace impurity were conducted in the Korea Superconducting Tokamak Advanced Research (KSTAR) H-mode plasma (BT = 2.8 T, IP = 0.6 MA, and PNBI =… read more here.
Keywords: electron cyclotron; impurity transport; transport; kstar mode ... See more keywords
Global modelling of tungsten impurity transport based on the drift-kinetic equation
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DOI: 10.1088/1741-4326/ab5462
Abstract: A global kinetic simulation model of collisional impurity transport is developed for evaluating the radial particle flux of tungsten impurity in the edge region of a tokamak plasma. Here, the plasma including the impurity and… read more here.
Keywords: drift kinetic; impurity transport; impurity; kinetic equation ... See more keywords
Impact of main ion pressure anisotropy on stellarator impurity transport
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DOI: 10.1088/1741-4326/ab581f
Abstract: Main ions influence impurity dynamics through a variety of mechanisms; in particular, via impurity-ion collisions. To lowest order in an expansion in the main ion mass over the impurity mass, the impurity-ion collision operator only… read more here.
Keywords: impurity transport; impurity; main ion; pressure anisotropy ... See more keywords
Validation of low-Z impurity transport theory using boron perturbation experiments at ASDEX upgrade
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ac3cd9
Abstract: An experimental technique has been developed at ASDEX upgrade (AUG) to separately identify the diffusive and convective components of the boron particle flux. Using this technique a database of B transport coefficients has been assembled… read more here.
Keywords: asdex upgrade; impurity transport; impurity; diffusion ... See more keywords