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Kinetic simulation of vacuum plasma expansion beyond the 'plasma approximation'
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- معلومة اضافية
- بيانات النشر:
University of Defence in Belgrade
- الموضوع:
2022
- Collection:
Directory of Open Access Journals: DOAJ Articles
- نبذة مختصرة :
Introduction/purpose: One of the key approaches to solving an entire class of modern plasma physics problems is the so-called "plasma approximation". The most general definition of the "plasma approximation" is a theoretical approach to the electric field calculation of a system of charges under the electric quasi-neutrality condition. The purpose of this paper is to compare the results of the numerical simulation of the kinetic processes of the quasi-neutral plasma bunch expansion to the analytical solution of a similar kinetic model but in the "plasma approximation". Methods: The given results are obtained by the methods of deterministic modeling based on the numerical solution of the system of Vlasov-Poisson equations. Results: The provided comparison of the analytical expressions for the solution of kinetic equations in the "plasma approximation" and the numerical solutions of the Vlasov-Poisson equations system convincingly show the limitations of the "plasma approximation" in some important cases of the considered problem of plasma formation decay. Conclusion: The theoretical results of this work are of great importance for understanding the shortcomings of the "plasma approximation", which can manifest themselves in practical applications of computational plasma physics.
- ISSN:
0042-8469
2217-4753
- Relation:
https://scindeks.ceon.rs/article.aspx?artid=0042-84692203650K; https://doaj.org/toc/0042-8469; https://doaj.org/toc/2217-4753; https://doaj.org/article/5b0be3ca9e0b4b16a7cb2aa0c58976ac
- الرقم المعرف:
10.5937/vojtehg70-37337
- الرقم المعرف:
edsbas.A31637E5
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