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Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model

The plasma-induced charge of non-spherical microparticles is a crucial parameter in complex plasma physics, aerosol science and astrophysics. Yet, the literature describes this charge by two competing models, neither of which has been experimentally verified or refuted. Here we offer experimental pr...

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Autores principales: van Minderhout, B., van Huijstee, J. C. A., Rompelberg, R. M. H., Post, A., Peijnenburg, A. T. A., Blom, P., Beckers, J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8333332/
https://www.ncbi.nlm.nih.gov/pubmed/34344881
http://dx.doi.org/10.1038/s41467-021-23604-z
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author van Minderhout, B.
van Huijstee, J. C. A.
Rompelberg, R. M. H.
Post, A.
Peijnenburg, A. T. A.
Blom, P.
Beckers, J.
author_facet van Minderhout, B.
van Huijstee, J. C. A.
Rompelberg, R. M. H.
Post, A.
Peijnenburg, A. T. A.
Blom, P.
Beckers, J.
author_sort van Minderhout, B.
collection PubMed
description The plasma-induced charge of non-spherical microparticles is a crucial parameter in complex plasma physics, aerosol science and astrophysics. Yet, the literature describes this charge by two competing models, neither of which has been experimentally verified or refuted. Here we offer experimental proof that the charge on a two-particle cluster (doublet) in the spatial afterglow of a low-pressure plasma equals the charge that would be obtained by the smallest enclosing sphere and that it should therefore not be based on its geometrical capacitance but rather on the capacitance of its smallest enclosing sphere. To support this conclusion, the size, mass and charge of single particles (singlets) and doublets are measured with high precision. The measured ratio between the plasma-afterglow-induced charges on doublets and singlets is compared to both models and shows perfect agreement with the predicted ratio using the capacitance of the smallest enclosing sphere, while being significantly dissimilar to the predicted ratio based on the particle’s geometrical capacitance.
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spelling pubmed-83333322021-08-12 Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model van Minderhout, B. van Huijstee, J. C. A. Rompelberg, R. M. H. Post, A. Peijnenburg, A. T. A. Blom, P. Beckers, J. Nat Commun Article The plasma-induced charge of non-spherical microparticles is a crucial parameter in complex plasma physics, aerosol science and astrophysics. Yet, the literature describes this charge by two competing models, neither of which has been experimentally verified or refuted. Here we offer experimental proof that the charge on a two-particle cluster (doublet) in the spatial afterglow of a low-pressure plasma equals the charge that would be obtained by the smallest enclosing sphere and that it should therefore not be based on its geometrical capacitance but rather on the capacitance of its smallest enclosing sphere. To support this conclusion, the size, mass and charge of single particles (singlets) and doublets are measured with high precision. The measured ratio between the plasma-afterglow-induced charges on doublets and singlets is compared to both models and shows perfect agreement with the predicted ratio using the capacitance of the smallest enclosing sphere, while being significantly dissimilar to the predicted ratio based on the particle’s geometrical capacitance. Nature Publishing Group UK 2021-08-03 /pmc/articles/PMC8333332/ /pubmed/34344881 http://dx.doi.org/10.1038/s41467-021-23604-z Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
van Minderhout, B.
van Huijstee, J. C. A.
Rompelberg, R. M. H.
Post, A.
Peijnenburg, A. T. A.
Blom, P.
Beckers, J.
Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
title Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
title_full Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
title_fullStr Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
title_full_unstemmed Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
title_short Charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
title_sort charge of clustered microparticles measured in spatial plasma afterglows follows the smallest enclosing sphere model
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8333332/
https://www.ncbi.nlm.nih.gov/pubmed/34344881
http://dx.doi.org/10.1038/s41467-021-23604-z
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