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Title: Effect of Electronic Inertia on the Gravito-Electrostatic Sheath Structure Formation

Abstract

The gravito-electrostatic sheath (GES) model, previously proposed to address the fundamental issues on the surface emission mechanism of outflowing solar plasma on the basis of plasma−wall interaction processes with inertialess electrons on both bounded and unbounded scales, is reformulated in the light of active electron inertial response amid geometrical curvature effects. We accordingly derive the electron population distribution law considering both weak electron inertia and geometrical curvature effects in a new analytic construct coupled with the GES structure equations in a closed form. The analysis shows that the GES characteristics and hence plasma outflow dynamics are noticeably affected because of electron inertia. As a consequence of the electron inertia inclusion in contrast with the previous GES formalism, it is found that the GES width gets reduced (–5%), the sheath boundary gets contracted (–7%), the net current density at the surface gets reduced (–25%), the GES potential enhances (+17%), the transonic horizon decreases (‒35%), self-gravity enhances (+2%), and so forth. The obtained results are in fair accord with the existing model predictions centered around both the earlier GES formalisms and standard fluid-kinetic predictions.

Authors:
;  [1]
  1. Tezpur University, Department of Physics (India)
Publication Date:
OSTI Identifier:
22763291
Resource Type:
Journal Article
Journal Name:
Plasma Physics Reports
Additional Journal Information:
Journal Volume: 44; Journal Issue: 3; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-780X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CURRENT DENSITY; ELECTRONS; ELECTROSTATICS; GRAVITATION; PLASMA

Citation Formats

Goutam, H. P., and Karmakar, P. K., E-mail: pkk@tezu.ernet.in. Effect of Electronic Inertia on the Gravito-Electrostatic Sheath Structure Formation. United States: N. p., 2018. Web. doi:10.1134/S1063780X18030030.
Goutam, H. P., & Karmakar, P. K., E-mail: pkk@tezu.ernet.in. Effect of Electronic Inertia on the Gravito-Electrostatic Sheath Structure Formation. United States. doi:10.1134/S1063780X18030030.
Goutam, H. P., and Karmakar, P. K., E-mail: pkk@tezu.ernet.in. Thu . "Effect of Electronic Inertia on the Gravito-Electrostatic Sheath Structure Formation". United States. doi:10.1134/S1063780X18030030.
@article{osti_22763291,
title = {Effect of Electronic Inertia on the Gravito-Electrostatic Sheath Structure Formation},
author = {Goutam, H. P. and Karmakar, P. K., E-mail: pkk@tezu.ernet.in},
abstractNote = {The gravito-electrostatic sheath (GES) model, previously proposed to address the fundamental issues on the surface emission mechanism of outflowing solar plasma on the basis of plasma−wall interaction processes with inertialess electrons on both bounded and unbounded scales, is reformulated in the light of active electron inertial response amid geometrical curvature effects. We accordingly derive the electron population distribution law considering both weak electron inertia and geometrical curvature effects in a new analytic construct coupled with the GES structure equations in a closed form. The analysis shows that the GES characteristics and hence plasma outflow dynamics are noticeably affected because of electron inertia. As a consequence of the electron inertia inclusion in contrast with the previous GES formalism, it is found that the GES width gets reduced (–5%), the sheath boundary gets contracted (–7%), the net current density at the surface gets reduced (–25%), the GES potential enhances (+17%), the transonic horizon decreases (‒35%), self-gravity enhances (+2%), and so forth. The obtained results are in fair accord with the existing model predictions centered around both the earlier GES formalisms and standard fluid-kinetic predictions.},
doi = {10.1134/S1063780X18030030},
journal = {Plasma Physics Reports},
issn = {1063-780X},
number = 3,
volume = 44,
place = {United States},
year = {2018},
month = {3}
}