CRRES observations of stormtime ring current ion composition

1996 ◽  
Author(s):  
J. L. Roeder ◽  
J. F. Fennell ◽  
M. W. Chen ◽  
M. Grande ◽  
S. Livi ◽  
...  
Keyword(s):  
Ring Current ◽  
Ion Composition

scholarly journals Inference of the ring current ion composition by means of charge exchange decay

1981 ◽  
Vol 86 (A5) ◽  
pp. 3470 ◽  
Author(s):  
Paul H. Smith ◽  
N. K. Bewtra ◽  
R. A. Hoffman
Keyword(s):  
Charge Exchange ◽  
Ring Current ◽  
Ion Composition

scholarly journals Ring current ion composition during solar minimum and rising solar activity: Polar/CAMMICE/MICS results

2001 ◽  
Vol 106 (A9) ◽  
pp. 19131-19147 ◽  
Author(s):  
T. I. Pulkkinen ◽  
N. Yu. Ganushkina ◽  
D. N. Baker ◽  
N. E. Turner ◽  
J. F. Fennell ◽  
...  
Keyword(s):  
Solar Activity ◽  
Solar Minimum ◽  
Ring Current ◽  
Ion Composition

Origin of energetic ions in the polar cusp inferred from ion composition measurements by the Viking satellite

1995 ◽  
Vol 13 (6) ◽  
pp. 595-607 ◽  
Author(s):  
G. Kremser ◽  
J. Woch ◽  
K. Mursula ◽  
P. Tanskanen ◽  
B. Wilken ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Ring Current ◽  
High Energy ◽  
Boundary Region ◽  
Ion Source ◽  
Current Layer ◽  
Ion Composition ◽  
Ion Distribution ◽  
Polar Cusp ◽  
High Energy Tail

Abstract. The magnetospheric ion composition spectrometer MICS on the Swedish Viking satellite provided measurements of the ion composition in the energy range 10.1 keV/e\\leqE/Q\\leq326.0 keV/e. Data obtained during orbit 842 were used to investigate the ion distribution in the northern polar cusp and its vicinity. The satellite traversed the outer ring current, boundary region, cusp proper and plasma mantle during its poleward movement. H+ and He++ ions were encountered in all of these regions. He+ ions were present only in the ring current. The number of O+ and O++ ions was very small. Heavy high-charge state ions typical for the solar wind were observed for the first time, most of them in the poleward part of the boundary region and in the cusp proper. The H+ ions exhibited two periods with high intensities. One of them, called the BR/CP event, appeared at energies up to 50 keV. It started at the equatorward limit of the boundary region and continued into the cusp proper. Energy spectra indicate a ring current origin for the BR/CP event. Pitch angle distributions show downward streaming of H+ ions at its equatorward limit and upward streaming on the poleward side. This event is interpreted as the result of pitch angle scattering of ring current ions by fluctuations in the magnetopause current layer in combination with poleward convection. The other of the two periods with high H+ ion intensities, called the accelerated ion event, was superimposed on the BR/CP event. It was restricted to energies \\leq15 keV and occurred in the poleward part of the boundary region. This event is regarded as the high-energy tail of magnetosheath ions that were accelerated while penetrating into the magnetosphere. The cusp region thus contains ions of magnetospheric as well as of magnetosheath origin. The appearance of the ions depends, in addition to the ion source, on the magnetic field configuration and dynamic processes inside and close to the cusp.

Ring current model of the naphthalene molecule

1997 ◽  
Vol 92 (3) ◽  
pp. 609-617 ◽  
Author(s):  
RICCARDO ZANASI ◽  
PAOLO LAZZERETTI
Keyword(s):  
Ring Current ◽  
Current Model ◽  
Naphthalene Molecule

Impact of filters of varying cleaning degrees on ion composition of air

2016 ◽  
Vol 0 (6) ◽  
Author(s):  
Valery G. Marchenko ◽  
Anatoliy E. Lagytin ◽  
Alexander I. Lipa ◽  
Anatoliy P. Ponomarenko
Keyword(s):  
Ion Composition

Structural and Magnetic Hysteresis Properties of Co-Zr Substituted Hexagonal Barium Ferrites

2015 ◽  
Vol 7 (1) ◽  
pp. 1346-1351
Author(s):  
Ch.Gopal Reddy ◽  
Ch. Venkateshwarlu ◽  
P. Vijaya Bhasker Reddy
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Magnetic Hysteresis ◽  
Grain Morphology ◽  
Hexagonal Structure ◽  
Ion Composition ◽  
X Ray Diffraction ◽  
Ceramic Method ◽  
Barium Ferrites ◽  
Xrd Patterns

Co-Zr substituted M-type hexagonal barium ferrites, with chemical formula BaCoxZrxFe12-2xO19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), have been synthesized by double sintering ceramic method. The crystallographic properties, grain morphology and magnetic properties of these ferrites have been investigated by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM). The XRD patterns confirm the single phase with hexagonal structure of prepared ferrites. The magnetic properties have been investigated as a function of Co and Zr ion composition at an applied field in the range of 20 KOe. These studies indicate that the saturation magnetization (Ms) in the samples increases initially up to the Co-Zr composition of x=0.6 and decreases thereafter. On the other hand, the coercivity (Hc) and Remanent magnetization (Mr) are found to decrease continuously with increasing Co-Zr content. This property is most useful in permanent magnetic recording. The observed results are explained on the basis of site occupation of Co and Zr ions in the samples.

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