Kinetic energy partitions in electron–ion PIC simulations of ABC fields

• Autorzy: Chen Qiang

Identyfikatory

DOI

10.2478/nuka-2023-0004

• Języki publikacji: EN

Abstrakty

EN

We explore the kinetic energy partitions between electrons and ions in the 2-D magnetostatic equilibria called Arnold–Beltrami–Childress (ABC) fields, using particle-in-cell (PIC) numerical simulations. We cover a wider range of ion–electron temperature combinations and get different results compared to previous studies of the Harris-layer-type magnetic reconnection simulations. We find that the initial ion–electron enthalpy ratio is an important indicator. The particle species that dominates the total enthalpy will also dominate the kinetic energy gains and the momentum distribution peaks, but the other species have higher nonthermal energy fractions because both species show similar maximum energies.

Słowa kluczowe

EN

acceleration of particles; magnetic reconnection; relativisitc processes; simulations

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2023
• Tom: Vol. 68, No. 1
• Strony: 25--28
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Chen Qiang

• Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences Bartycka 18 St., 00-716 Warsaw, Poland and Institute of Plasma Physics and Laser Microfusion Hery 23 St., 01-497 Warsaw, Poland

• https://orcid.org/0000-0002-0547-1544

Bibliografia

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• 4. Arnold, V. (1965). Sur une proprietes topologique des applications globalment canonique de la mechanique classique. CR. Acad. Sci. Paris, 261, 3719.
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• 11. Nalewajko, K., Zrake, J., Yuan, Y., East, W. E., & Blandford R. D. (2016). Kinetic simulations of the lowest-order unstable mode of relativistic magnetostatic equilibria. Astrophys. J., 826, 115. DOI: 10.3847/0004-637x/826/2/115.
• 12. Yuan, Y., Nalewajko, K., Zrake, J., East, W. E., & Blandford, R. D. (2016). Kinetic study of radiationreaction-limited particle acceleration during the relaxation of unstable force-free equilibria. Astrophys. J., 828, 92. DOI: 10.3847/0004-637x/828/2/92.
• 13. Werner, G. R., Uzdensky, D. A., Begelman, M. C., Cerutti, B., & Nalewajko, K. (2018). Non-thermal particle acceleration in collisionless relativistic electron–proton reconnection. Mon. Not. Roy. Astron. Soc., 473, 4840. DOI: 10.1093/mnras/stx2530.
• 14. Rowan, M. E., Sironi, L., & Narayan, R. (2017). Electron and proton heating in transrelativistic magnetic reconnection. Astrophys. J., 850, 29. DOI: 10.3847/1538-4357/aa9380.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).