scholarly journals Global simulation of the Jovian magnetosphere: Transitional structure from the Io plasma disk to the plasma sheet

2021 ◽  
Author(s):  
T. Tanaka ◽  
Y. Ebihara ◽  
M. Watanabe ◽  
S. Fujita ◽  
R. Kataoka
Keyword(s):  
Plasma Sheet ◽  
Global Simulation ◽  
Jovian Magnetosphere

Evidence of Alfvénic Interactions in the Jovian Magnetosphere from the Juno Spacecraft

2020 ◽  
Author(s):  
Christopher T.S Lorch ◽  
Licia C. Ray ◽  
Clare E.J. Watt ◽  
Robert J. Wilson ◽  
Frances Bagenal ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Boundary Layer ◽  
Plasma Sheet ◽  
Energetic Particle ◽  
Magnetospheric Plasma ◽  
Thermal Velocity ◽  
Particle Detector ◽  
Plasma Sheet Boundary Layer ◽  
Dominant Mechanism ◽  
Jovian Magnetosphere

<p>New insights provided by Juno energetic particle detector measurements indicate signatures of Alfvénic acceleration are more common than previously anticipated. Studies at Earth show that Alfvén waves can substantially accelerate plasma within the magnetosphere. At Jupiter, it is now predicted that Alfvénic acceleration is the dominant mechanism for generating the planet's powerful aurora. This acceleration occurs when the plasma thermal velocity is approximately equal to the Alfvén velocity, which at Jupiter occurs around the plasma sheet boundary. Using Juno JADE and MAG data, we investigate the regions surrounding the plasma sheet boundary layer in order to identify signatures of Alfvénic activity. Our study finds correlations between inertial scale magnetic field perturbations and variations in the local plasma population. We suggest that these signatures may be linked to turbulence in the plasma disk, which could be a source of heating for magnetospheric plasma observed in other studies.</p>

scholarly journals Geometry of the plasma sheet in the midnight-to-dawn sector of the Jovian Magnetosphere: Plasma observations with the Galileo spacecraft

1997 ◽  
Vol 24 (8) ◽  
pp. 869-872 ◽  
Author(s):  
Vytenis M. Vasyliūnas ◽  
Louis A. Frank ◽  
Kent L. Ackerson ◽  
William R. Paterson
Keyword(s):  
Plasma Sheet ◽  
Jovian Magnetosphere ◽  
Magnetosphere Plasma ◽  
Dawn Sector

Theory of the plasma sheet in the jovian magnetosphere

1977 ◽  
Vol 25 (7) ◽  
pp. 673-679 ◽  
Author(s):  
H. Goldstein
Keyword(s):  
Plasma Sheet ◽  
Jovian Magnetosphere

The superdense plasma sheet: Plasmaspheric origin, solar wind origin, or ionospheric origin?

1997 ◽  
Vol 102 (A10) ◽  
pp. 22089-22106 ◽  
Author(s):  
Joseph E. Borovsky
Keyword(s):  
Solar Wind ◽  
Plasma Sheet ◽  
Solar Wind Origin

Access of plasma sheet ions to the inner magnetosphere

2001 ◽  
Author(s):  
Paul Rothwell ◽  
William Burke ◽  
Carl-Gunne Falthammar
Keyword(s):  
Plasma Sheet ◽  
Inner Magnetosphere

The Variation of the Plasma Sheet Polytropic Index Along the Midnight Meridian in a Finite Width Magnetotail

1990 ◽  
Author(s):  
H. E. Spence ◽  
M. G. Kivelson
Keyword(s):  
Plasma Sheet ◽  
Polytropic Index ◽  
Finite Width

Plasma Sheet Boundary Layer in Jupiter's Magnetodisk as Observed by Juno

2020 ◽  
Vol 125 (8) ◽  
Author(s):  
X.‐J. Zhang ◽  
Q. Ma ◽  
A. V. Artemyev ◽  
W. Li ◽  
W. S. Kurth ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Plasma Sheet ◽  
Plasma Sheet Boundary Layer

scholarly journals Surface modification of PMMA polymer and its composites with PC61BM fullerene derivative using an atmospheric pressure microwave argon plasma sheet

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrzej Sikora ◽  
Dariusz Czylkowski ◽  
Bartosz Hrycak ◽  
Magdalena Moczała-Dusanowska ◽  
Marcin Łapiński ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Chemical Composition ◽  
Water Contact Angle ◽  
Plasma Sheet ◽  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Fullerene Derivative ◽  
Water Contact ◽  
Pmma Polymer

AbstractThis paper presents the results of experimental investigations of the plasma surface modification of a poly(methyl methacrylate) (PMMA) polymer and PMMA composites with a [6,6]-phenyl-C61-butyric acid methyl ester fullerene derivative (PC61BM). An atmospheric pressure microwave (2.45 GHz) argon plasma sheet was used. The experimental parameters were: an argon (Ar) flow rate (up to 20 NL/min), microwave power (up to 530 W), number of plasma scans (up to 3) and, the kind of treated material. In order to assess the plasma effect, the possible changes in the wettability, roughness, chemical composition, and mechanical properties of the plasma-treated samples’ surfaces were evaluated by water contact angle goniometry (WCA), atomic force microscopy (AFM), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS). The best result concerning the water contact angle reduction was from 83° to 29.7° for the PMMA material. The ageing studies of the PMMA plasma-modified surface showed long term (100 h) improved wettability. As a result of plasma treating, changes in the samples surface roughness parameters were observed, however their dependence on the number of plasma scans is irregular. The ATR-FTIR spectra of the PMMA plasma-treated surfaces showed only slight changes in comparison with the spectra of an untreated sample. The more significant differences were demonstrated by XPS measurements indicating the surface chemical composition changes after plasma treatment and revealing the oxygen to carbon ratio increase from 0.1 to 0.4.

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