Leddy, Jarrod, Willett, Hannah Victoria and Dudson, Benjamin Daniel orcid.org/0000-0002-0094-4867 (2016) Simulation of the interaction between plasma turbulence and neutrals in linear devices. Nuclear Materials and Energy. ISSN 2352-1791
Abstract
The interaction between plasma and neutrals within a tokamak dominates the behaviour of the edge plasma, especially in the divertor region. This area is not quiescent, but has significant perturbations in the density and temperature due to turbulent fluctuations. Investigating the interaction between the neutrals and plasma is important for accurately simulating and understanding processes such as detachment in tokamaks. For simplicity, yet motivated by tokamak edge plasma, we simulate a linear plasma device and compare the sources and sinks due to ionisation, recombination, and charge exchange for cases with and without turbulence. Interestingly, the turbulence systematically strengthens the interaction, creating stronger sources and sinks for the plasma and neutrals. Not only does the strength of the interactions increase, but the location of these processes also changes. The recombination and charge exchange have relatively short mean free paths, so these processes occur on the scale of the eddy fluctuations, while the ionisation is mostly unaffected by the turbulence.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number EPSRC EP/M001423/1 |
Depositing User: | Pure (York) |
Date Deposited: | 17 Oct 2016 10:24 |
Last Modified: | 21 Jan 2025 17:22 |
Published Version: | https://doi.org/10.1016/j.nme.2016.09.020 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.nme.2016.09.020 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106046 |
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