Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles
An emerging topic in complex plasma physics is the interaction between dust particles and afterglow plasmas. Control of plasma-particle interactions and specifically of the particle trajectories is especially relevant for plasma based contamination control applications. In systems where this contami...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.926160/full |
| _version_ | 1811242856256372736 |
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| author | J. C. A. van Huijstee P. Blom A. T. A. Peijnenburg J. Beckers |
| author_facet | J. C. A. van Huijstee P. Blom A. T. A. Peijnenburg J. Beckers |
| author_sort | J. C. A. van Huijstee |
| collection | DOAJ |
| description | An emerging topic in complex plasma physics is the interaction between dust particles and afterglow plasmas. Control of plasma-particle interactions and specifically of the particle trajectories is especially relevant for plasma based contamination control applications. In systems where this contamination control is relevant, emerging or applied plasmas can be of highly transient nature, due to which contaminating particles interact with a combination of a spatial and a temporal afterglow plasma. Until now this type of plasmas and the possible interaction with embedded microparticles has remained far from fully explored in literature. In this work we visually record falling microparticles in a spatio-temporal afterglow of a low pressure inductively coupled plasma and observe a sudden and temporary reversal in their vertical velocity. Numerical simulations confirm that this effect is due to the cooling of the heated background gas in the former active plasma region, which creates a pressure wave and causes microparticles in the spatial afterglow to experience an additional neutral drag force in direction of the plasma bulk. Besides being an interesting principle phenomenon, the presence of this effect could have added value for developing plasma-driven particle contamination control applications. Moreover, for a well defined vacuum vessel geometry and plasma heating volume, this enables the use of microparticles in the spatio-temporal afterglow as probe for the neutral gas temperature in plasma. |
| first_indexed | 2024-04-12T13:58:09Z |
| format | Article |
| id | doaj.art-b21556e916324a41a9bad0463bf68865 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-12T13:58:09Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-b21556e916324a41a9bad0463bf688652022-12-22T03:30:19ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-06-011010.3389/fphy.2022.926160926160Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on MicroparticlesJ. C. A. van Huijstee0P. Blom1A. T. A. Peijnenburg2J. Beckers3Department of Applied Physics, Eindhoven University of Technology, Eindhoven, NetherlandsVDL Enabling Technologies Group, Eindhoven, NetherlandsVDL Enabling Technologies Group, Eindhoven, NetherlandsDepartment of Applied Physics, Eindhoven University of Technology, Eindhoven, NetherlandsAn emerging topic in complex plasma physics is the interaction between dust particles and afterglow plasmas. Control of plasma-particle interactions and specifically of the particle trajectories is especially relevant for plasma based contamination control applications. In systems where this contamination control is relevant, emerging or applied plasmas can be of highly transient nature, due to which contaminating particles interact with a combination of a spatial and a temporal afterglow plasma. Until now this type of plasmas and the possible interaction with embedded microparticles has remained far from fully explored in literature. In this work we visually record falling microparticles in a spatio-temporal afterglow of a low pressure inductively coupled plasma and observe a sudden and temporary reversal in their vertical velocity. Numerical simulations confirm that this effect is due to the cooling of the heated background gas in the former active plasma region, which creates a pressure wave and causes microparticles in the spatial afterglow to experience an additional neutral drag force in direction of the plasma bulk. Besides being an interesting principle phenomenon, the presence of this effect could have added value for developing plasma-driven particle contamination control applications. Moreover, for a well defined vacuum vessel geometry and plasma heating volume, this enables the use of microparticles in the spatio-temporal afterglow as probe for the neutral gas temperature in plasma.https://www.frontiersin.org/articles/10.3389/fphy.2022.926160/fulldusty plasmaafterglow plasmamicroparticlesneutral dragpressure waveneutral gas temperature |
| spellingShingle | J. C. A. van Huijstee P. Blom A. T. A. Peijnenburg J. Beckers Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles Frontiers in Physics dusty plasma afterglow plasma microparticles neutral drag pressure wave neutral gas temperature |
| title | Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles |
| title_full | Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles |
| title_fullStr | Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles |
| title_full_unstemmed | Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles |
| title_short | Spatio-Temporal Plasma Afterglow Induces Additional Neutral Drag Force on Microparticles |
| title_sort | spatio temporal plasma afterglow induces additional neutral drag force on microparticles |
| topic | dusty plasma afterglow plasma microparticles neutral drag pressure wave neutral gas temperature |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.926160/full |
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