Effect of kinetic anisotropies on the beta parameter in collisionless magnetized non-ideal plasma fluids
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F25%3AA0000412" target="_blank" >RIV/47813059:19630/25:A0000412 - isvavai.cz</a>
Result on the web
<a href="https://pubs.aip.org/aip/pof/article-abstract/37/3/037109/3338699/Effect-of-kinetic-anisotropies-on-the-beta?redirectedFrom=fulltext" target="_blank" >https://pubs.aip.org/aip/pof/article-abstract/37/3/037109/3338699/Effect-of-kinetic-anisotropies-on-the-beta?redirectedFrom=fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0257673" target="_blank" >10.1063/5.0257673</a>
Alternative languages
Result language
angličtina
Original language name
Effect of kinetic anisotropies on the beta parameter in collisionless magnetized non-ideal plasma fluids
Original language description
It is demonstrated that collisionless magnetized plasma fluids at equilibrium characterized by the occurrence of phase-space kinetic anisotropies exhibit a lower beta parameter with respect to corresponding isotropic configurations. The theoretical framework is provided by statistical kinetic formulation of plasma physics based on the Vlasov equation in both relativistic and non-relativistic regimes. The proof relies on the analytical construction of non-isotropic Gaussian-like kinetic distribution functions (KDFs) that are consistent with microscopic single-particle exact or adiabatic conservation laws. These KDFs generate corresponding non-ideal magnetized plasma fluids characterized by non-isotropic pressure tensors. A depletion of the magnitude of directional plasma pressure components compared to the thermal isotropic scalar pressure is shown to occur, that is induced by phase-space anisotropies. It is pointed out that this physical principle enhancing low-beta states can represent a mechanism contributing the self-confinement of magnetized plasmas at equilibrium. Relevant applications concern high-energy astrophysical scenarios characterized by intense background magnetic fields, with particular reference to asymptotically steady states of collisionless plasmas forming non-ideal fluids in toroidal structures or relativistic jets.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICS OF FLUIDS
ISSN
1070-6631
e-ISSN
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Volume of the periodical
37
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
„037109-1“-„037109-17“
UT code for WoS article
001439935600025
EID of the result in the Scopus database
2-s2.0-86000497300