The Formation of Electron Heat Flux in the Region of Diffuse Aurora

2020 ◽  
Vol 125 (8) ◽  
Author(s):  
George V. Khazanov ◽  
Alex Glocer ◽  
Mike Chu
Keyword(s):  
Heat Flux ◽  
Electron Heat ◽  
Diffuse Aurora

The role of electron heat flux in guide-field magnetic reconnection

2004 ◽  
Vol 11 (12) ◽  
pp. 5387-5397 ◽  
Author(s):  
Michael Hesse ◽  
Masha Kuznetsova ◽  
Joachim Birn
Keyword(s):  
Heat Flux ◽  
Magnetic Reconnection ◽  
Guide Field ◽  
Electron Heat

scholarly journals The electron heat flux in the polar solar wind: Ulysses observations

1999 ◽  
Vol 26 (14) ◽  
pp. 2129-2132 ◽  
Author(s):  
Earl E. Scime ◽  
Allen E. Badeau ◽  
J. E. Littleton
Keyword(s):  
Heat Flux ◽  
Solar Wind ◽  
Electron Heat

Regulation of the solar wind electron heat flux from 1 to 5 AU: Ulysses observations

1994 ◽  
Vol 99 (A12) ◽  
pp. 23401 ◽  
Author(s):  
Earl E. Scime ◽  
Samuel J. Bame ◽  
William C. Feldman ◽  
S. Peter Gary ◽  
John L. Phillips ◽  
...  
Keyword(s):  
Heat Flux ◽  
Solar Wind ◽  
Electron Heat ◽  
Solar Wind Electron

A new MHD model for Io's and Europa's plasma interaction

2020 ◽  
Author(s):  
Aljona Blöcker ◽  
Lorenz Roth ◽  
Nickolay Ivchenko ◽  
Emmanuel Chané ◽  
Ronny Keppens
Keyword(s):  
Heat Flux ◽  
Electron Temperature ◽  
Inelastic Collisions ◽  
Magnetized Plasma ◽  
Plasma Interaction ◽  
Complex Plasma ◽  
Electron Heat ◽  
Self Consistent ◽  
Physical Effects ◽  
Auroral Emissions

<p>Io and Europa are embedded in Jupiter’s magnetosphere and the moons’ surfaces and atmospheres interact with the surrounding moving magnetized plasma forming a complex plasma interaction. The interaction scenarios for both moons are characterized by inhomogeneities in the atmospheres from local outgassing. These inhomogeneities affect the electromagnetic environment but can also lead to localized features in the moons' auroral emissions. The moons’ aurora in turn is sensitive to the energy or temperature of the exciting electrons in the plasma. To simulate the interaction scenarios including atmospheric inhomogeneities and aurora generation, we expand the magnetohydrodynamic code MPI-AMRVAC by implementing a self-consistent description of the electron temperature and the electron density where the cooling by inelastic collisions between the magnetospheric electrons and the atmosphere, and the electron heat flux from the magnetospheric plasma to the moons’ ionosphere are included. Furthermore, the numerical schemes of MPI-AMRVAC are able to handle discontinuities that arise from the atmospheric inhomogeneities. Here, we demonstrate the implementation of the physical effects and first modeling results of Io’s and Europa’s plasma interaction with the advanced MHD code.</p>

scholarly journals Solar cycle variations in the electron heat flux: Ulysses observations

2001 ◽  
Vol 28 (11) ◽  
pp. 2169-2172 ◽  
Author(s):  
Earl E. Scime ◽  
J. E. Littleton ◽  
S. Peter Gary ◽  
Ruth Skoug ◽  
Naiguo Lin
Keyword(s):  
Heat Flux ◽  
Solar Cycle ◽  
Electron Heat

Core-edge 2D fluid modeling of full tokamak discharge with varying magnetic equilibrium: from WEST start-up to ramp-down

2022 ◽  
Author(s):  
Manuel Scotto d'Abusco ◽  
Giorgio Giorgiani ◽  
Jean-Francois Artaud ◽  
Hugo Bufferand ◽  
Guido Ciraolo ◽  
...  
Keyword(s):  
Heat Flux ◽  
Fluid Transport ◽  
Time Integration ◽  
Electron Heat ◽  
Start Up ◽  
Fusion Operation ◽  
Discharge Simulation ◽  
Plasma Core ◽  
First Time ◽  
Magnetic Equilibrium

Abstract In the present work we investigate for the first time the 2D fluid transport of the plasma in WEST during an entire discharge from the start-up to the ramp-down (shot #54487). The evolution of density profile, electron and ion temperatures together with the experimental magnetic equilibrium, total current and gas-puff rate is investigated. Comparisons with the interferometry diagnostic show a remarkable overall qualitative agreement during the discharge that can be quantitative at some locations in the plasma core. If at the onset of the X-points during the ramp-up the electron heat flux is dominant at the target, present results show that the ion heat flux becomes dominant during the stationary phase of the discharge. Using a simple model for erosion, present results assess the tungsten sputtering due to deuterium ions during the start-up and ramp-up phases of the discharge and confirms the need to consider full discharge simulation to accurately treat the W source of contamination. This work also demonstrates the interest of developing magnetic equilibrium free solver including efficient time integration to step toward predictive capabilities in the future for fusion operation.

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