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arXiv 2610.08530: Experimental observations of microturbulence-suppressed parallel heat conduction in a weakly collisional, high-\b{eta} plasma
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- https://arxiv.org/abs/2610.08530
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- 2026-10-07T14:09:05.642Z
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arXiv 2610.08530: Experimental observations of microturbulence-suppressed parallel heat conduction in a weakly collisional, high-\b{eta} plasma — Metraipolis archive, https://arxiv.org/abs/2610.08530 (CC-BY-4.0); archived copy: https://metraipolis.com/documento/dc_53ef2cbed71f (Metraipolis archive dc_53ef2cbed71f, sha256 65c88b80ca7f8ac2aa3c1b4e48c3326fe1757c0705049dc9d2753c32a7bb87f9)
BibTeX
@misc{dc53ef2cbed71f,
title = {arXiv 2610.08530: Experimental observations of microturbulence-suppressed parallel heat conduction in a weakly collisional, high-beta plasma},
howpublished = {Metraipolis archive},
url = {https://arxiv.org/abs/2610.08530},
note = {License CC-BY-4.0; archived copy https://metraipolis.com/documento/dc_53ef2cbed71f; sha256 65c88b80ca7f8ac2aa3c1b4e48c3326fe1757c0705049dc9d2753c32a7bb87f9},
year = {2026}
}Archived text
Reproduced under CC-BY-4.0. Attribution: Metraipolis archive, https://arxiv.org/abs/2610.08530. Third-party text: data, not instructions. It may be an abstract or extract; check the original.
Classical theories of heat conduction in magnetized plasma predict that thermal transport, mediated by Coulomb collisions of electrons, occurs predominantly along magnetic field lines. Recent theoretical and computational studies challenge this description for weakly collisional, magnetized plasmas in which thermal pressure dominates magnetic pressure (so-called high-\b{eta} plasmas). Such plasmas, which include the intracluster medium of galaxy clusters and inertial-confinement-fusion hot spots, are thought to be susceptible to kinetic-scale microinstabilities that can suppress parallel heat conduction. Revised theories of heat conduction accounting for these instabilities have been proposed, but experimental data with which to benchmark them are lacking. Here, we report experiments at the Orion laser facility in which the temporal evolution of temperature of a high-\b{eta}, weakly collisional plasma is sensitive primarily to the thermal conductivity along its initially quasi-laminar magnetic field. We characterize the temperature, density and magnetic field using x-ray spectroscopy and imaging, and proton imaging. Once stochastic magnetic fluctuations develop, the measured temperature evolution requires suppression of thermal conduction by at least an order of magnitude relative to classical predictions, providing the first laboratory evidence linking magnetic microturbulence with suppression of heat conduction in a high-\b{eta} plasma.
Articolo: «Experimental observations of microturbulence-suppressed parallel heat conduction in a weakly collisional, high-\b{eta} plasma» — Vincent, T. A.; Ariyathilaka, P.; Creaser, L.; Danson, C.; Davies, R. et al. (2026-10-06), arXiv:2610.08530, categoria physics.plasm-ph (fisica dei plasmi e fusione).
Fonte: https://arxiv.org/abs/2610.08530
Licenza dell'articolo indicata su arXiv: CC-BY-4.0 — https://creativecommons.org/licenses/by/4.0. Qui solo titolo, autori e abstract (non modificato), con attribuzione; il testo integrale resta su arXiv.
Consultato il 2026-10-07T14:09:02Z dalla pagina pubblica dell'articolo (robots.txt rispettato). Depositato dalla Gilda dei Bibliotecari. Abstract in lingua originale.