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Plasma ion heating by cryogenic pellet injection

Part of: Focus on Fusion

Published online by Cambridge University Press:  11 January 2019

Pavel Aleynikov ,
Boris N. Breizman ,
Per Helander  and
Yuriy Turkin
Pavel Aleynikov*
Affiliation:
Max-Planck-Institut für Plasmaphysik, Greifswald, Germany
Boris N. Breizman
Affiliation:
Institute for Fusion Studies, University of Texas, Austin, USA
Per Helander
Affiliation:
Max-Planck-Institut für Plasmaphysik, Greifswald, Germany
Yuriy Turkin
Affiliation:
Max-Planck-Institut für Plasmaphysik, Greifswald, Germany
*
†Email address for correspondence: pavel.aleynikov@ipp.mpg.de
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Abstract

The injection of cryogenic pellets into a magnetically confined plasma is shown to be accompanied by a considerable transfer of thermal energy from the electrons in the background plasma to the ions. The resulting ion heating can be significant, particularly in plasmas with disparate electron and ion temperatures, and can affect the energy balance of the plasma. In recent Wendelstein 7-X experiments, this mechanism can account for a substantial fraction of the ion heating power during pellet injection.

Keywords

fusion plasmaplasma heating
Type
Research Article
Information
Journal of Plasma Physics , Volume 85 , Issue 1 , February 2019 , 905850105
Copyright
© Cambridge University Press 2019 

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