Effect of Negative Ion Generation on Complex Plasma Structure Properties
We propose a low-density discharge plasma model that takes into account the impact of oxygen admixture in typical conditions of complex (dusty) plasmas. Numerical simulations based on this model show that the concentration of negative ions turns out to be very high, and they play an important role i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/27/24/8669 |
| _version_ | 1827637577941778432 |
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| author | Andrey V. Zobnin Andrey M. Lipaev Alexander D. Usachev |
| author_facet | Andrey V. Zobnin Andrey M. Lipaev Alexander D. Usachev |
| author_sort | Andrey V. Zobnin |
| collection | DOAJ |
| description | We propose a low-density discharge plasma model that takes into account the impact of oxygen admixture in typical conditions of complex (dusty) plasmas. Numerical simulations based on this model show that the concentration of negative ions turns out to be very high, and they play an important role in the overall kinetics in this particular range of plasma conditions. The ambipolar diffusion electric field drags these negative ions into the center of the plasma. The density of negative ions is high enough to push the negatively charged dust component out of the center, both by weakening the radial electric field and by increasing the thermophoretic force. This phenomenon was observed in the published experiment and qualitatively supports the proposed model. Additionally, the proposed model allows an alternative explanation of the experiment. |
| first_indexed | 2024-03-09T16:02:54Z |
| format | Article |
| id | doaj.art-0bf4728dc3ba4fad8f5d8079a169a0ef |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T16:02:54Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-0bf4728dc3ba4fad8f5d8079a169a0ef2023-11-24T16:55:24ZengMDPI AGMolecules1420-30492022-12-012724866910.3390/molecules27248669Effect of Negative Ion Generation on Complex Plasma Structure PropertiesAndrey V. Zobnin0Andrey M. Lipaev1Alexander D. Usachev2Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, RussiaJoint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, RussiaJoint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, RussiaWe propose a low-density discharge plasma model that takes into account the impact of oxygen admixture in typical conditions of complex (dusty) plasmas. Numerical simulations based on this model show that the concentration of negative ions turns out to be very high, and they play an important role in the overall kinetics in this particular range of plasma conditions. The ambipolar diffusion electric field drags these negative ions into the center of the plasma. The density of negative ions is high enough to push the negatively charged dust component out of the center, both by weakening the radial electric field and by increasing the thermophoretic force. This phenomenon was observed in the published experiment and qualitatively supports the proposed model. Additionally, the proposed model allows an alternative explanation of the experiment.https://www.mdpi.com/1420-3049/27/24/8669gas dischargenegative ionscomplex plasma |
| spellingShingle | Andrey V. Zobnin Andrey M. Lipaev Alexander D. Usachev Effect of Negative Ion Generation on Complex Plasma Structure Properties Molecules gas discharge negative ions complex plasma |
| title | Effect of Negative Ion Generation on Complex Plasma Structure Properties |
| title_full | Effect of Negative Ion Generation on Complex Plasma Structure Properties |
| title_fullStr | Effect of Negative Ion Generation on Complex Plasma Structure Properties |
| title_full_unstemmed | Effect of Negative Ion Generation on Complex Plasma Structure Properties |
| title_short | Effect of Negative Ion Generation on Complex Plasma Structure Properties |
| title_sort | effect of negative ion generation on complex plasma structure properties |
| topic | gas discharge negative ions complex plasma |
| url | https://www.mdpi.com/1420-3049/27/24/8669 |
| work_keys_str_mv | AT andreyvzobnin effectofnegativeiongenerationoncomplexplasmastructureproperties AT andreymlipaev effectofnegativeiongenerationoncomplexplasmastructureproperties AT alexanderdusachev effectofnegativeiongenerationoncomplexplasmastructureproperties |