Influence of finite ion Larmor radius on the dynamics of weakly-collisional plasma jets colliding in magnetic arch
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911456190005248 |
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| author | Korzhimanov, Artem V. Zemskov, Roman S. Koryagin, Sergey A. Viktorov, Mikhail E. |
| author_facet | Korzhimanov, Artem V. Zemskov, Roman S. Koryagin, Sergey A. Viktorov, Mikhail E. |
| contents | The effect of the finite ion Larmor radius on the dynamics of two counterstreaming weakly collisional plasma flows in a magnetic field of an arch configuration is considered. Hybrid numerical simulations show that in a system whose dimensions are close to the ion Larmor radius, more intense interaction dynamics are observed, the magnetic arch experiences a significant expansion with the formation of a region with an irregular character of magnetic lines, in which magnetic reconnection processes occur. In this case, the generation of a surface wave of the ion-cyclotron range is observed at the boundaries of the arch. An increase in the scale of the system compared to the ion Larmor radius leads to a transition to the ideal MHD regime, in which the evolution of the arch occurs much more slowly, and the development of instabilities is not observed. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_02519 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Influence of finite ion Larmor radius on the dynamics of weakly-collisional plasma jets colliding in magnetic arch Korzhimanov, Artem V. Zemskov, Roman S. Koryagin, Sergey A. Viktorov, Mikhail E. Plasma Physics The effect of the finite ion Larmor radius on the dynamics of two counterstreaming weakly collisional plasma flows in a magnetic field of an arch configuration is considered. Hybrid numerical simulations show that in a system whose dimensions are close to the ion Larmor radius, more intense interaction dynamics are observed, the magnetic arch experiences a significant expansion with the formation of a region with an irregular character of magnetic lines, in which magnetic reconnection processes occur. In this case, the generation of a surface wave of the ion-cyclotron range is observed at the boundaries of the arch. An increase in the scale of the system compared to the ion Larmor radius leads to a transition to the ideal MHD regime, in which the evolution of the arch occurs much more slowly, and the development of instabilities is not observed. |
| title | Influence of finite ion Larmor radius on the dynamics of weakly-collisional plasma jets colliding in magnetic arch |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2508.02519 |