Articles with "ion scale" as a keyword



Temperature variations in the dayside magnetosheath and their dependence on ion-scale magnetic structures: THEMIS statistics and measurements by MMS

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2016ja023729

Abstract: The magnetosheath contains an array of waves, instabilities, and nonlinear magnetic structures which modify global plasma properties by means of various wave-particle interactions. The present work demonstrates that ion-scale magnetic field structures (∼0.2–0.5 Hz) observed in… read more here.

Keywords: magnetosheath; temperature; ion scale; magnetic structures ... See more keywords

Ion‐Scale Wave Properties and Enhanced Ion Heating Across the Low‐Latitude Boundary Layer During Kelvin‐Helmholtz Instability

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017ja024591

Abstract: In the Earth's magnetosphere, the magnetotail plasma sheet ions are much hotter than in the shocked solar wind. On the dawn-sector, the cold-component ions are more abundant and hotter by 30-40 percent when compared to… read more here.

Keywords: wave properties; ion; scale wave; ion scale ... See more keywords

Internal structures of the ion-scale flux rope associated with dayside magnetopause reconnection

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Published in 2020 at "Astrophysics and Space Science"

DOI: 10.1007/s10509-020-03803-8

Abstract: Ion-scale magnetic flux ropes have been observed in the reconnection diffusion region. In this paper, we show a typical ion-scale flux rope observed by the Magnetospheric Multiscale spacecraft at the subsolar magnetopause. The most intriguing… read more here.

Keywords: flux rope; reconnection; scale flux; ion scale ... See more keywords

Ion‐Scale Characteristics of the Martian Magnetic Pile‐Up Boundary Layer

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Published in 2025 at "Geophysical Research Letters"

DOI: 10.1029/2024gl113340

Abstract: The Martian magnetic pile‐up boundary (MPB) delineates the interface between the magnetosheath and the induced magnetosphere, but its global ion‐scale characteristics remaining unclear. Utilizing a three‐dimensional Hall magnetohydrodynamic (MHD) model, this study aims to reveal… read more here.

Keywords: scale characteristics; ion scale; martian magnetic; pile boundary ... See more keywords

Laser-driven, ion-scale magnetospheres in laboratory plasmas. II. Particle-in-cell simulations

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Published in 2022 at "Physics of Plasmas"

DOI: 10.1063/5.0084354

Abstract: Ion-scale magnetospheres have been observed around comets, weakly magnetized asteroids, and localized regions on the Moon and provide a unique environment to study kinetic-scale plasma physics, in particular in the collision-less regime. In this work,… read more here.

Keywords: ion scale; scale; particle cell; scale magnetospheres ... See more keywords

Electromagnetic ion cyclotron emission from ion-scale magnetic holes

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Published in 2024 at "Physics of Plasmas"

DOI: 10.1063/5.0205942

Abstract: Ion-scale magnetic holes are nonlinear plasma structures commonly observed in the solar wind and Earth's magnetosphere. These holes are characterized by the magnetic field depletion filled by hot, transversely anisotropic ions and electrons and are… read more here.

Keywords: ion scale; magnetic holes; ion cyclotron; ion ... See more keywords

A subgrid model for electron-scale turbulent transport in global ion-scale gyrokinetic simulations of tokamak plasmas

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Published in 2024 at "Physics of Plasmas"

DOI: 10.1063/5.0241525

Abstract: A subgrid electron–temperature–gradient (ETG) model is demonstrated here which averages local electron-scale turbulence over intermediate scales in space and time to include in global ion–temperature–gradient (ITG) simulations. This approach results in ion-scale equations, which incorporate… read more here.

Keywords: scale; global ion; electron scale; ion scale ... See more keywords

Ion-scale turbulence in MAST: anomalous transport, subcritical transitions, and comparison to BES measurements

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Published in 2017 at "Plasma Physics and Controlled Fusion"

DOI: 10.1088/1361-6587/aa8484

Abstract: We investigate the effect of varying the ion temperature gradient (ITG) and toroidal equilibrium scale sheared flow on ion-scale turbulence in the outer core of MAST by means of local gyrokinetic simulations. We show that… read more here.

Keywords: scale turbulence; turbulence mast; ion scale; turbulence ... See more keywords

Magnetic depression and electron transport in an ion-scale flux rope associated with Kelvin-Helmholtz waves

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Published in 2018 at "Annales Geophysicae"

DOI: 10.5194/angeo-36-879-2018

Abstract: Abstract. We report an ion-scale magnetic flux rope (the size of the flux rope is ∼  8.5 ion inertial lengths) at the trailing edge of Kelvin–Helmholtz (KH) waves observed by the Magnetospheric Multiscale (MMS) mission on… read more here.

Keywords: flux rope; field; flux; ion scale ... See more keywords