scholarly journals Proton core temperature effects on the relative drift and anisotropy evolution of the ion beam instability in the fast solar wind

2002 ◽  
Vol 107 (A12) ◽  
pp. SSH 8-1-SSH 8-10 ◽  
Author(s):  
Jaime A. Araneda ◽  
Adolfo F. Viñas ◽  
Hernán F. Astudillo
Keyword(s):  
Solar Wind ◽  
Core Temperature ◽  
Temperature Effects ◽  
Ion Beam ◽  
Beam Instability ◽  
Fast Solar Wind ◽  
Proton Core

scholarly journals A PARALLEL-PROPAGATING ALFVÉNIC ION-BEAM INSTABILITY IN THE HIGH-BETA SOLAR WIND

2013 ◽  
Vol 773 (1) ◽  
pp. 8 ◽  
Author(s):  
Daniel Verscharen ◽  
Sofiane Bourouaine ◽  
Benjamin D. G. Chandran ◽  
Bennett A. Maruca
Keyword(s):  
Solar Wind ◽  
Ion Beam ◽  
Beam Instability ◽  
High Beta

scholarly journals Electromagnetic Proton Beam Instabilities in the Inner Heliosphere: Energy Transfer Rate, Radial Distribution and Effective Excitation

2021 ◽  
Author(s):  
Wen Liu ◽  
Jinsong Zhao ◽  
Huasheng Xie ◽  
Dejin Wu
Keyword(s):  
Solar Wind ◽  
Energy Transfer ◽  
Proton Beam ◽  
Transfer Rate ◽  
Ion Beam ◽  
Beam Instability ◽  
Energy Transfer Rate ◽  
Differential Flow ◽  
Effective Growth ◽  
Inner Heliosphere

<p>Differential flow among different ion species are always observed in the solar wind, and such ion differential flow can provide a free energy to drive the Alfven/ion-cyclotron and fast-magnetosonic/whistler instabilities. Previous works on the ion beam instability are mainly focused on the solar wind parameters at 1 au. We extend this study using the radial model of the magnetic field and plasma parameters in the inner heliosphere. We present the distributions of the energy transfer rate among the unstable waves and the particles, which would be useful to predict the change of parallel and perpendicular temperatures during the instability evolution. Moreover, we propose an effective growth length to estimate the effective growth in each instability, and we explore that the oblique Alfven/ion-cyclotron instability, the oblique fast-magnetosonic/whistler instability and the oblique Alfven/ion-beam instability can be effectively driven by proton beams having speed of 500-2000 km/s in the solar atmosphere. We also show that the unstable waves driven by the proton beam instability would be responsible for the solar corona heating. These predictions can be checked by in situ satellite measurements in the inner heliosphere.</p>

Modeling proton and electron heating in the fast solar wind

2020 ◽  
Author(s):  
L. Adhikari ◽  
G.P. Zank ◽  
L.-L. Zhao ◽  
M. Nakanotani ◽  
S. Tasnim
Keyword(s):  
Solar Wind ◽  
Fast Solar Wind ◽  
Electron Heating

Ion-Ion Beam Instability in a Cylindrical Geometry

1974 ◽  
Vol 33 (13) ◽  
pp. 754-757 ◽  
Author(s):  
Noah Hershkowitz ◽  
Thomas Romesser ◽  
Georg Knorr ◽  
Christoph K. Goertz
Keyword(s):  
Ion Beam ◽  
Cylindrical Geometry ◽  
Beam Instability

scholarly journals First multispacecraft ion measurements in and near the Earth’s magnetosphere with the identical Cluster ion spectrometry (CIS) experiment

2001 ◽  
Vol 19 (10/12) ◽  
pp. 1303-1354 ◽  
Author(s):  
H. Rème ◽  
C. Aoustin ◽  
J. M. Bosqued ◽  
I. Dandouras ◽  
B. Lavraud ◽  
...  
Keyword(s):  
Solar Wind ◽  
Angular Resolution ◽  
Dynamic Range ◽  
Ion Beam ◽  
Three Dimensional ◽  
Charge Composition ◽  
Ion Distribution ◽  
Central Plasma ◽  
Cluster Ion ◽  
High Level

Abstract. On board the four Cluster spacecraft, the Cluster Ion Spectrometry (CIS) experiment measures the full, three-dimensional ion distribution of the major magnetospheric ions (H+, He+, He++, and O+) from the thermal energies to about 40 keV/e. The experiment consists of two different instruments: a COmposition and DIstribution Function analyser (CIS1/CODIF), giving the mass per charge composition with medium (22.5°) angular resolution, and a Hot Ion Analyser (CIS2/HIA), which does not offer mass resolution but has a better angular resolution (5.6°) that is adequate for ion beam and solar wind measurements. Each analyser has two different sensitivities in order to increase the dynamic range. First tests of the instruments (commissioning activities) were achieved from early September 2000 to mid January 2001, and the operation phase began on 1 February 2001. In this paper, first results of the CIS instruments are presented showing the high level performances and capabilities of the instruments. Good examples of data were obtained in the central plasma sheet, magnetopause crossings, magnetosheath, solar wind and cusp measurements. Observations in the auroral regions could also be obtained with the Cluster spacecraft at radial distances of 4–6 Earth radii. These results show the tremendous interest of multispacecraft measurements with identical instruments and open a new area in magnetospheric and solar wind-magnetosphere interaction physics.Key words. Magnetospheric physics (magnetopause, cusp and boundary layers; magnetopheric configuration and dynamics; solar wind - magnetosphere interactions)

Ion Beam Instability in Hall Thrusters

2015 ◽  
Vol 43 (1) ◽  
pp. 64-71 ◽  
Author(s):  
Alexander Kapulkin ◽  
Ehud Behar
Keyword(s):  
Ion Beam ◽  
Hall Thrusters ◽  
Beam Instability

scholarly journals ELEMENTAL ABUNDANCES IN THE FAST SOLAR WIND EMANATING FROM CHROMOSPHERIC FUNNELS

2010 ◽  
Vol 709 (2) ◽  
pp. 993-1002 ◽  
Author(s):  
Stefano Pucci ◽  
Øystein Lie-Svendsen ◽  
Ruth Esser
Keyword(s):  
Solar Wind ◽  
Fast Solar Wind ◽  
Elemental Abundances

scholarly journals Uncertainties of the solar wind in-situ velocity measurements

2020 ◽  
pp. 193-197
Author(s):  
G. Gogoberidze ◽  
E. Gorgaslidze
Keyword(s):  
Solar Wind ◽  
Independent Method ◽  
Inertial Range ◽  
Velocity Measurements ◽  
Fast Solar Wind ◽  
Magnetohydrodynamic Turbulence ◽  
Velocity Fluctuations ◽  
Measurement Uncertainties ◽  
General Instrument

We study spectral features of Alfvénic turbulence in fast solar wind. We propose a general, instrument independent method to estimate the uncertainty in velocity fluctuations obtained by in-situ satellite observations in the solar wind. We show that when the measurement uncertainties of the velocity fluctuations are taken into account the less energetic Elsasser spectrum obeys a unique power law scaling throughout the inertial range as prevailing theories of magnetohydrodynamic turbulence predict.

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